43990404 has 24 divisors (see below), whose sum is σ = 102906720. Its totient is φ = 14625984.

The previous prime is 43990399. The next prime is 43990423. The reversal of 43990404 is 40409934.

It is a happy 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, 427 + ... + 9389.

It is an arithmetic number, because the mean of its divisors is an integer number (4287780).

Almost surely, 2^43990404 is an apocalyptic number.

It is an amenable number.

43990404 is an abundant number, since it is smaller than the sum of its proper divisors (58916316).

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

43990404 is a wasteful number, since it uses less digits than its factorization.

43990404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9379 (or 9377 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 43990404 is about 6632.5262155532. The cubic root of 43990404 is about 353.0091671040.

The spelling of 43990404 in words is "forty-three million, nine hundred ninety thousand, four hundred four".