40663904 has 12 divisors (see below), whose sum is σ = 80057124. Its totient is φ = 20331936.

The previous prime is 40663897. The next prime is 40663919. The reversal of 40663904 is 40936604.

40663904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (32), and also a Moran number because the ratio is a prime number: 1270747 = 40663904 / (4 + 0 + 6 + 6 + 3 + 9 + 0 + 4).

It is a congruent number.

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 as a sum of consecutive naturals, namely, 635342 + ... + 635405.

It is an arithmetic number, because the mean of its divisors is an integer number (6671427).

Almost surely, 2^40663904 is an apocalyptic number.

It is an amenable number.

40663904 is a deficient number, since it is larger than the sum of its proper divisors (39393220).

40663904 is a wasteful number, since it uses less digits than its factorization.

40663904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1270757 (or 1270749 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 40663904 is about 6376.8255425407. The cubic root of 40663904 is about 343.8769164851.

The spelling of 40663904 in words is "forty million, six hundred sixty-three thousand, nine hundred four".