40940644 has 48 divisors (see below), whose sum is σ = 78059520. Its totient is φ = 18738720.

The previous prime is 40940639. The next prime is 40940651. The reversal of 40940644 is 44604904.

It is a super-2 number, since 2×40940644² = 3352272662269472, which contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 312459 + ... + 312589.

It is an arithmetic number, because the mean of its divisors is an integer number (1626240).

Almost surely, 2^40940644 is an apocalyptic number.

It is an amenable number.

40940644 is a deficient number, since it is larger than the sum of its proper divisors (37118876).

40940644 is a wasteful number, since it uses less digits than its factorization.

40940644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 40940644 is about 6398.4876338085. The cubic root of 40940644 is about 344.6552433630.

The spelling of 40940644 in words is "forty million, nine hundred forty thousand, six hundred forty-four".