40120408 has 32 divisors (see below), whose sum is σ = 80200800. Its totient is φ = 18749952.

The previous prime is 40120397. The next prime is 40120463. The reversal of 40120408 is 80402104.

It is a congruent number.

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, 20413 + ... + 22291.

It is an arithmetic number, because the mean of its divisors is an integer number (2506275).

Almost surely, 2^40120408 is an apocalyptic number.

It is an amenable number.

40120408 is a deficient number, since it is larger than the sum of its proper divisors (40080392).

40120408 is a wasteful number, since it uses less digits than its factorization.

40120408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2059 (or 2055 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 40120408 is about 6334.0672557212. The cubic root of 40120408 is about 342.3380035583.

The spelling of 40120408 in words is "forty million, one hundred twenty thousand, four hundred eight".