40491608 has 24 divisors (see below), whose sum is σ = 76989780. Its totient is φ = 19964880.

The previous prime is 40491601. The next prime is 40491623. The reversal of 40491608 is 80619404.

40491608 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40491601) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 49523 + ... + 50333.

Almost surely, 2^40491608 is an apocalyptic number.

It is an amenable number.

40491608 is a deficient number, since it is larger than the sum of its proper divisors (36498172).

40491608 is an equidigital number, since it uses as much as digits as its factorization.

40491608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 975 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 32.

The square root of 40491608 is about 6363.3016587303. The cubic root of 40491608 is about 343.3905515178.

The spelling of 40491608 in words is "forty million, four hundred ninety-one thousand, six hundred eight".