40491208 has 32 divisors (see below), whose sum is σ = 80213760. Its totient is φ = 19131840.

The previous prime is 40491193. The next prime is 40491233. The reversal of 40491208 is 80219404.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8766 + ... + 12562.

It is an arithmetic number, because the mean of its divisors is an integer number (2506680).

Almost surely, 2^40491208 is an apocalyptic number.

It is an amenable number.

40491208 is a deficient number, since it is larger than the sum of its proper divisors (39722552).

40491208 is a wasteful number, since it uses less digits than its factorization.

40491208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3877 (or 3873 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 40491208 is about 6363.2702284281. The cubic root of 40491208 is about 343.3894207759.

The spelling of 40491208 in words is "forty million, four hundred ninety-one thousand, two hundred eight".