390215 has 8 divisors (see below), whose sum is σ = 535200. Its totient is φ = 267552.

The previous prime is 390211. The next prime is 390223. The reversal of 390215 is 512093.

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

It is a cyclic number.

It is not a de Polignac number, because 390215 - 2² = 390211 is a prime.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5540 + ... + 5609.

It is an arithmetic number, because the mean of its divisors is an integer number (66900).

2³⁹⁰²¹⁵ is an apocalyptic number.

390215 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

390215 is a deficient number, since it is larger than the sum of its proper divisors (144985).

390215 is a wasteful number, since it uses less digits than its factorization.

390215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11161.

The product of its (nonzero) digits is 270, while the sum is 20.

The square root of 390215 is about 624.6719138876. The cubic root of 390215 is about 73.0748590936.

The spelling of 390215 in words is "three hundred ninety thousand, two hundred fifteen".