390308 has 6 divisors (see below), whose sum is σ = 683046. Its totient is φ = 195152.

The previous prime is 390307. The next prime is 390323. The reversal of 390308 is 803093.

It can be written as a sum of positive squares in only one way, i.e., 262144 + 128164 = 512^2 + 358^2 .

It is not an unprimeable number, because it can be changed into a prime (390307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 48785 + ... + 48792.

It is an arithmetic number, because the mean of its divisors is an integer number (113841).

2³⁹⁰³⁰⁸ is an apocalyptic number.

It is an amenable number.

390308 is a deficient number, since it is larger than the sum of its proper divisors (292738).

390308 is a wasteful number, since it uses less digits than its factorization.

390308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97581 (or 97579 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 390308 is about 624.7463485287. The cubic root of 390308 is about 73.0806639466.

The spelling of 390308 in words is "three hundred ninety thousand, three hundred eight".