390315 has 8 divisors (see below), whose sum is σ = 624528. Its totient is φ = 208160.

The previous prime is 390307. The next prime is 390323. The reversal of 390315 is 513093.

390315 = T₂₉₀ + T₂₉₁ + ... + T₂₉₈.

It is an interprime number because it is at equal distance from previous prime (390307) and next prime (390323).

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

It is not a de Polignac number, because 390315 - 2³ = 390307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 390291 and 390300.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12996 + ... + 13025.

It is an arithmetic number, because the mean of its divisors is an integer number (78066).

2³⁹⁰³¹⁵ is an apocalyptic number.

390315 is a deficient number, since it is larger than the sum of its proper divisors (234213).

390315 is a wasteful number, since it uses less digits than its factorization.

390315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26029.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 390315 is about 624.7519507773. The cubic root of 390315 is about 73.0811008337.

The spelling of 390315 in words is "three hundred ninety thousand, three hundred fifteen".