40491908 has 12 divisors (see below), whose sum is σ = 70936320. Its totient is φ = 20224392.

The previous prime is 40491881. The next prime is 40491911. The reversal of 40491908 is 80919404.

40491908 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×40491908² = 3279189226960928, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 716 + ... + 9027.

It is an arithmetic number, because the mean of its divisors is an integer number (5911360).

Almost surely, 2^40491908 is an apocalyptic number.

It is an amenable number.

40491908 is a deficient number, since it is larger than the sum of its proper divisors (30444412).

40491908 is a wasteful number, since it uses less digits than its factorization.

40491908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10786 (or 10784 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 40491908 is about 6363.3252313551. The cubic root of 40491908 is about 343.3913995693.

The spelling of 40491908 in words is "forty million, four hundred ninety-one thousand, nine hundred eight".