390792725 has 12 divisors (see below), whose sum is σ = 491223396. Its totient is φ = 308350080.

The previous prime is 390792679. The next prime is 390792749. The reversal of 390792725 is 527297093.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 97969 + 390694756 = 313^2 + 19766^2 .

It is not a de Polignac number, because 390792725 - 2²⁰ = 389744149 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105242 + ... + 108891.

It is an arithmetic number, because the mean of its divisors is an integer number (40935283).

Almost surely, 2^390792725 is an apocalyptic number.

It is an amenable number.

390792725 is a deficient number, since it is larger than the sum of its proper divisors (100430671).

390792725 is a wasteful number, since it uses less digits than its factorization.

390792725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214216 (or 214211 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 44.

The square root of 390792725 is about 19768.4780648385. The cubic root of 390792725 is about 731.1090448356.

The spelling of 390792725 in words is "three hundred ninety million, seven hundred ninety-two thousand, seven hundred twenty-five".