43990436904 has 32 divisors (see below), whose sum is σ = 110013969120. Its totient is φ = 14658428736.

The previous prime is 43990436863. The next prime is 43990436957. The reversal of 43990436904 is 40963409934.

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, 244174 + ... + 384189.

It is an arithmetic number, because the mean of its divisors is an integer number (3437936535).

Almost surely, 2^43990436904 is an apocalyptic number.

It is an amenable number.

43990436904 is an abundant number, since it is smaller than the sum of its proper divisors (66023532216).

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

43990436904 is a wasteful number, since it uses less digits than its factorization.

43990436904 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 631289 (or 631285 counting only the distinct ones).

The product of its (nonzero) digits is 2519424, while the sum is 51.

The spelling of 43990436904 in words is "forty-three billion, nine hundred ninety million, four hundred thirty-six thousand, nine hundred four".