390612 has 24 divisors (see below), whose sum is σ = 933856. Its totient is φ = 127008.

The previous prime is 390581. The next prime is 390647. The reversal of 390612 is 216093.

It is a nialpdrome in base 5.

It is a zygodrome in base 5.

It is a congruent number.

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, 138 + ... + 894.

2³⁹⁰⁶¹² is an apocalyptic number.

It is an amenable number.

390612 is an abundant number, since it is smaller than the sum of its proper divisors (543244).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

390612 is a wasteful number, since it uses less digits than its factorization.

390612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 807 (or 805 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 21.

The square root of 390612 is about 624.9895999135. The cubic root of 390612 is about 73.0996325187.

The spelling of 390612 in words is "three hundred ninety thousand, six hundred twelve".