404040438 has 12 divisors (see below), whose sum is σ = 875420988. Its totient is φ = 134680140.

The previous prime is 404040433. The next prime is 404040449. The reversal of 404040438 is 834040404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404040433) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11223328 + ... + 11223363.

It is an arithmetic number, because the mean of its divisors is an integer number (72951749).

Almost surely, 2^404040438 is an apocalyptic number.

404040438 is an abundant number, since it is smaller than the sum of its proper divisors (471380550).

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

404040438 is a wasteful number, since it uses less digits than its factorization.

404040438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22446699 (or 22446696 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 404040438 is about 20100.7571499185. The cubic root of 404040438 is about 739.2788433324.

The spelling of 404040438 in words is "four hundred four million, forty thousand, four hundred thirty-eight".