956400638 has 16 divisors (see below), whose sum is σ = 1445986080. Its totient is φ = 474420576.

The previous prime is 956400631. The next prime is 956400649. The reversal of 956400638 is 836004659.

956400638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 956400595 and 956400604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (956400631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130631 + ... + 137757.

It is an arithmetic number, because the mean of its divisors is an integer number (90374130).

Almost surely, 2^956400638 is an apocalyptic number.

956400638 is a deficient number, since it is larger than the sum of its proper divisors (489585442).

956400638 is a wasteful number, since it uses less digits than its factorization.

956400638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7651.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 956400638 is about 30925.7277683161. The cubic root of 956400638 is about 985.2503981750.

The spelling of 956400638 in words is "nine hundred fifty-six million, four hundred thousand, six hundred thirty-eight".