40864656 has 40 divisors (see below), whose sum is σ = 120649024. Its totient is φ = 11675520.

The previous prime is 40864627. The next prime is 40864661. The reversal of 40864656 is 65646804.

40864656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60475 + ... + 61146.

Almost surely, 2^40864656 is an apocalyptic number.

It is an amenable number.

40864656 is an abundant number, since it is smaller than the sum of its proper divisors (79784368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40864656 is a wasteful number, since it uses less digits than its factorization.

40864656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121639 (or 121633 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

The square root of 40864656 is about 6392.5469102698. The cubic root of 40864656 is about 344.4418785179.

The spelling of 40864656 in words is "forty million, eight hundred sixty-four thousand, six hundred fifty-six".