390630925 has 12 divisors (see below), whose sum is σ = 485045716. Its totient is φ = 312076800.

The previous prime is 390630923. The next prime is 390630949. The reversal of 390630925 is 529036093.

It can be written as a sum of positive squares in 6 ways, for example, as 28185481 + 362445444 = 5309^2 + 19038^2 .

It is not a de Polignac number, because 390630925 - 2¹ = 390630923 is a prime.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390630923) by changing a digit.

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, 8605 + ... + 29245.

Almost surely, 2^390630925 is an apocalyptic number.

It is an amenable number.

390630925 is a deficient number, since it is larger than the sum of its proper divisors (94414791).

390630925 is a wasteful number, since it uses less digits than its factorization.

390630925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21408 (or 21403 counting only the distinct ones).

The product of its (nonzero) digits is 43740, while the sum is 37.

The square root of 390630925 is about 19764.3852674451. The cubic root of 390630925 is about 731.0081304930.

The spelling of 390630925 in words is "three hundred ninety million, six hundred thirty thousand, nine hundred twenty-five".