40456644 has 24 divisors (see below), whose sum is σ = 94641120. Its totient is φ = 13450944.

The previous prime is 40456639. The next prime is 40456657. The reversal of 40456644 is 44665404.

It is an unprimeable number.

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, 787 + ... + 9029.

It is an arithmetic number, because the mean of its divisors is an integer number (3943380).

Almost surely, 2^40456644 is an apocalyptic number.

It is an amenable number.

40456644 is an abundant number, since it is smaller than the sum of its proper divisors (54184476).

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

40456644 is a wasteful number, since it uses less digits than its factorization.

40456644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8659 (or 8657 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 33.

The square root of 40456644 is about 6360.5537494781. The cubic root of 40456644 is about 343.2916852320.

The spelling of 40456644 in words is "forty million, four hundred fifty-six thousand, six hundred forty-four".