390392372 has 6 divisors (see below), whose sum is σ = 683186658. Its totient is φ = 195196184.

The previous prime is 390392357. The next prime is 390392381. The reversal of 390392372 is 273293093.

It can be written as a sum of positive squares in only one way, i.e., 321269776 + 69122596 = 17924^2 + 8314^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48799043 + ... + 48799050.

It is an arithmetic number, because the mean of its divisors is an integer number (113864443).

Almost surely, 2^390392372 is an apocalyptic number.

It is an amenable number.

390392372 is a deficient number, since it is larger than the sum of its proper divisors (292794286).

390392372 is a wasteful number, since it uses less digits than its factorization.

390392372 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97598097 (or 97598095 counting only the distinct ones).

The product of its (nonzero) digits is 61236, while the sum is 38.

The square root of 390392372 is about 19758.3494249899. The cubic root of 390392372 is about 730.8592946128.

It can be divided in two parts, 3 and 90392372, that multiplied together give a triangular number (271177116 = T₂₃₂₈₈).

The spelling of 390392372 in words is "three hundred ninety million, three hundred ninety-two thousand, three hundred seventy-two".