404000139 has 8 divisors (see below), whose sum is σ = 538765200. Its totient is φ = 269284256.

The previous prime is 404000137. The next prime is 404000147. The reversal of 404000139 is 931000404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 404000139 - 2¹ = 404000137 is a prime.

It is a super-2 number, since 2×404000139² = 326432224624038642, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (404000137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16537 + ... + 32885.

It is an arithmetic number, because the mean of its divisors is an integer number (67345650).

Almost surely, 2^404000139 is an apocalyptic number.

404000139 is a deficient number, since it is larger than the sum of its proper divisors (134765061).

404000139 is a wasteful number, since it uses less digits than its factorization.

404000139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24589.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 404000139 is about 20099.7546999957. The cubic root of 404000139 is about 739.2542639538.

The spelling of 404000139 in words is "four hundred four million, one hundred thirty-nine", and thus it is an aban number.