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8402153989 = 1923139138323
BaseRepresentation
bin1111101001100111…
…01011001000000101
3210200120010122110111
413310303223020011
5114201422411424
63505423153021
7415133062525
oct76463531005
923616118414
108402153989
113621884719
121765a45771
13a3b959c68
14599c6d685
15342987194
hex1f4ceb205

8402153989 has 16 divisors (see below), whose sum is σ = 9295372800. Its totient is φ = 7559020656.

The previous prime is 8402153983. The next prime is 8402153999. The reversal of 8402153989 is 9893512048.

It is not a de Polignac number, because 8402153989 - 223 = 8393765381 is a prime.

It is a super-2 number, since 2×84021539892 (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8402153983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8419 + ... + 129904.

It is an arithmetic number, because the mean of its divisors is an integer number (580960800).

Almost surely, 28402153989 is an apocalyptic number.

It is an amenable number.

8402153989 is a deficient number, since it is larger than the sum of its proper divisors (893218811).

8402153989 is a wasteful number, since it uses less digits than its factorization.

8402153989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 138504.

The product of its (nonzero) digits is 622080, while the sum is 49.

The square root of 8402153989 is about 91663.2641192752. The cubic root of 8402153989 is about 2032.9664532699.

The spelling of 8402153989 in words is "eight billion, four hundred two million, one hundred fifty-three thousand, nine hundred eighty-nine".

Divisors: 1 19 23 139 437 2641 3197 60743 138323 2628137 3181429 19226897 60447151 365311043 442218631 8402153989