956944639 has 16 divisors (see below), whose sum is σ = 1137153600. Its totient is φ = 787901184.

The previous prime is 956944613. The next prime is 956944649. The reversal of 956944639 is 936449659.

It is not a de Polignac number, because 956944639 - 2⁵ = 956944607 is a prime.

It is a super-2 number, since 2×956944639² = 1831486084221680642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 956944639.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956944649) 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, 28027 + ... + 51955.

It is an arithmetic number, because the mean of its divisors is an integer number (71072100).

Almost surely, 2^956944639 is an apocalyptic number.

956944639 is a deficient number, since it is larger than the sum of its proper divisors (180208961).

956944639 is a wasteful number, since it uses less digits than its factorization.

956944639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24162.

The product of its digits is 6298560, while the sum is 55.

The square root of 956944639 is about 30934.5218000861. The cubic root of 956944639 is about 985.4371663526.

The spelling of 956944639 in words is "nine hundred fifty-six million, nine hundred forty-four thousand, six hundred thirty-nine".