390370172 has 12 divisors (see below), whose sum is σ = 686007840. Its totient is φ = 194367936.

The previous prime is 390370163. The next prime is 390370177. The reversal of 390370172 is 271073093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390370177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 203213 + ... + 205124.

It is an arithmetic number, because the mean of its divisors is an integer number (57167320).

Almost surely, 2^390370172 is an apocalyptic number.

It is an amenable number.

390370172 is a deficient number, since it is larger than the sum of its proper divisors (295637668).

390370172 is a wasteful number, since it uses less digits than its factorization.

390370172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408580 (or 408578 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 390370172 is about 19757.7876291856. The cubic root of 390370172 is about 730.8454407015.

The spelling of 390370172 in words is "three hundred ninety million, three hundred seventy thousand, one hundred seventy-two".