390535215 has 48 divisors (see below), whose sum is σ = 753758208. Its totient is φ = 169117632.

The previous prime is 390535183. The next prime is 390535247. The reversal of 390535215 is 512535093.

It is an interprime number because it is at equal distance from previous prime (390535183) and next prime (390535247).

It is not a de Polignac number, because 390535215 - 2⁵ = 390535183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32754 + ... + 43056.

It is an arithmetic number, because the mean of its divisors is an integer number (15703296).

Almost surely, 2^390535215 is an apocalyptic number.

390535215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

390535215 is a deficient number, since it is larger than the sum of its proper divisors (363222993).

390535215 is a wasteful number, since it uses less digits than its factorization.

390535215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10356 (or 10337 counting only the distinct ones).

The product of its (nonzero) digits is 20250, while the sum is 33.

The square root of 390535215 is about 19761.9638447195. The cubic root of 390535215 is about 730.9484232360.

The spelling of 390535215 in words is "three hundred ninety million, five hundred thirty-five thousand, two hundred fifteen".