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4289749 = 31711949
BaseRepresentation
bin10000010111010011010101
322001221102121
4100113103111
52044232444
6231535541
751314362
oct20272325
98057377
104289749
11246aa52
12152a5b1
13b72719
147d9469
1559b084
hex4174d5

4289749 has 8 divisors (see below), whose sum is σ = 4492800. Its totient is φ = 4090800.

The previous prime is 4289741. The next prime is 4289771. The reversal of 4289749 is 9479824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4289749 - 23 = 4289741 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4289741) 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 7 ways as a sum of consecutive naturals, for example, 1227 + ... + 3175.

It is an arithmetic number, because the mean of its divisors is an integer number (561600).

Almost surely, 24289749 is an apocalyptic number.

It is an amenable number.

4289749 is a deficient number, since it is larger than the sum of its proper divisors (203051).

4289749 is a wasteful number, since it uses less digits than its factorization.

4289749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051.

The product of its digits is 145152, while the sum is 43.

The square root of 4289749 is about 2071.1709248635. The cubic root of 4289749 is about 162.4840094719.

The spelling of 4289749 in words is "four million, two hundred eighty-nine thousand, seven hundred forty-nine".

Divisors: 1 31 71 1949 2201 60419 138379 4289749