390515 has 8 divisors (see below), whose sum is σ = 474768. Its totient is φ = 308320.

The previous prime is 390503. The next prime is 390527. The reversal of 390515 is 515093.

It is an interprime number because it is at equal distance from previous prime (390503) and next prime (390527).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 390515 - 2⁴ = 390499 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 7 ways as a sum of consecutive naturals, for example, 56 + ... + 885.

It is an arithmetic number, because the mean of its divisors is an integer number (59346).

2³⁹⁰⁵¹⁵ is an apocalyptic number.

390515 is a deficient number, since it is larger than the sum of its proper divisors (84253).

390515 is an equidigital number, since it uses as much as digits as its factorization.

390515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1029.

The product of its (nonzero) digits is 675, while the sum is 23.

The square root of 390515 is about 624.9119938039. The cubic root of 390515 is about 73.0935811162.

The spelling of 390515 in words is "three hundred ninety thousand, five hundred fifteen".