Search a number
-
+
69309037 = 79901291
BaseRepresentation
bin1000010000110…
…01001001101101
311211102021010101
410020121021231
5120220342122
610513311101
71501055110
oct410311155
9154367111
1069309037
11361399a6
121b265491
1311489185
1492c2577
156141027
hex421926d

69309037 has 4 divisors (see below), whose sum is σ = 79210336. Its totient is φ = 59407740.

The previous prime is 69309013. The next prime is 69309041. The reversal of 69309037 is 73090396.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 69309037 - 27 = 69308909 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 69308987 and 69309005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69309137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4950639 + ... + 4950652.

It is an arithmetic number, because the mean of its divisors is an integer number (19802584).

Almost surely, 269309037 is an apocalyptic number.

It is an amenable number.

69309037 is a deficient number, since it is larger than the sum of its proper divisors (9901299).

69309037 is an equidigital number, since it uses as much as digits as its factorization.

69309037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9901298.

The product of its (nonzero) digits is 30618, while the sum is 37.

The square root of 69309037 is about 8325.2049224028. The cubic root of 69309037 is about 410.7680171151.

The spelling of 69309037 in words is "sixty-nine million, three hundred nine thousand, thirty-seven".

Divisors: 1 7 9901291 69309037