390134172 has 12 divisors (see below), whose sum is σ = 910313096. Its totient is φ = 130044720.

The previous prime is 390134159. The next prime is 390134209. The reversal of 390134172 is 271431093.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16255579 + ... + 16255602.

Almost surely, 2^390134172 is an apocalyptic number.

It is an amenable number.

390134172 is an abundant number, since it is smaller than the sum of its proper divisors (520178924).

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

390134172 is a wasteful number, since it uses less digits than its factorization.

390134172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32511188 (or 32511186 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 390134172 is about 19751.8143976699. The cubic root of 390134172 is about 730.6981324064.

The spelling of 390134172 in words is "three hundred ninety million, one hundred thirty-four thousand, one hundred seventy-two".