390289372 has 18 divisors (see below), whose sum is σ = 750743504. Its totient is φ = 177404040.

The previous prime is 390289303. The next prime is 390289397. The reversal of 390289372 is 273982093.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 402708 + ... + 403675.

Almost surely, 2^390289372 is an apocalyptic number.

It is an amenable number.

390289372 is a deficient number, since it is larger than the sum of its proper divisors (360454132).

390289372 is a wasteful number, since it uses less digits than its factorization.

390289372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 806409 (or 806396 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 390289372 is about 19755.7427600179. The cubic root of 390289372 is about 730.7950130215.

It can be divided in two parts, 39028 and 9372, that added together give a square (48400 = 220²).

The spelling of 390289372 in words is "three hundred ninety million, two hundred eighty-nine thousand, three hundred seventy-two".