390708 has 18 divisors (see below), whose sum is σ = 987714. Its totient is φ = 130224.

The previous prime is 390707. The next prime is 390721. The reversal of 390708 is 807093.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 338724 + 51984 = 582^2 + 228^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (27) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390703) 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 5 ways as a sum of consecutive naturals, for example, 5391 + ... + 5462.

It is an arithmetic number, because the mean of its divisors is an integer number (54873).

2³⁹⁰⁷⁰⁸ is an apocalyptic number.

It is an amenable number.

390708 is an abundant number, since it is smaller than the sum of its proper divisors (597006).

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

390708 is a wasteful number, since it uses less digits than its factorization.

390708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10863 (or 10858 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 390708 is about 625.0663964732. The cubic root of 390708 is about 73.1056205494.

The spelling of 390708 in words is "three hundred ninety thousand, seven hundred eight".