390990513 has 16 divisors (see below), whose sum is σ = 529401600. Its totient is φ = 256638720.

The previous prime is 390990469. The next prime is 390990533. The reversal of 390990513 is 315099093.

It is not a de Polignac number, because 390990513 - 2⁶ = 390990449 is a prime.

It is not an unprimeable number, because it can be changed into a prime (390990533) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 90073 + ... + 94313.

It is an arithmetic number, because the mean of its divisors is an integer number (33087600).

Almost surely, 2^390990513 is an apocalyptic number.

It is an amenable number.

390990513 is a deficient number, since it is larger than the sum of its proper divisors (138411087).

390990513 is a wasteful number, since it uses less digits than its factorization.

390990513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4712.

The product of its (nonzero) digits is 32805, while the sum is 39.

The square root of 390990513 is about 19773.4800427239. The cubic root of 390990513 is about 731.2323669939.

The spelling of 390990513 in words is "three hundred ninety million, nine hundred ninety thousand, five hundred thirteen".