40900404 has 24 divisors (see below), whose sum is σ = 95794048. Its totient is φ = 13582080.

The previous prime is 40900403. The next prime is 40900421. The reversal of 40900404 is 40400904.

It is a happy number.

It is a super-4 number, since 4×40900404⁴ (a number of 32 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40900403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3037 + ... + 9540.

Almost surely, 2^40900404 is an apocalyptic number.

It is an amenable number.

40900404 is an abundant number, since it is smaller than the sum of its proper divisors (54893644).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40900404 is a wasteful number, since it uses less digits than its factorization.

40900404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12855 (or 12853 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 21.

The square root of 40900404 is about 6395.3423676923. The cubic root of 40900404 is about 344.5422873696.

Subtracting from 40900404 its reverse (40400904), we obtain a triangular number (499500 = T₉₉₉).

The spelling of 40900404 in words is "forty million, nine hundred thousand, four hundred four".