390776 has 8 divisors (see below), whose sum is σ = 732720. Its totient is φ = 195384.

The previous prime is 390763. The next prime is 390781. The reversal of 390776 is 677093.

390776 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a plaindrome in base 15.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24416 + ... + 24431.

It is an arithmetic number, because the mean of its divisors is an integer number (91590).

2³⁹⁰⁷⁷⁶ is an apocalyptic number.

It is an amenable number.

390776 is a deficient number, since it is larger than the sum of its proper divisors (341944).

390776 is a wasteful number, since it uses less digits than its factorization.

390776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48853 (or 48849 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 32.

The square root of 390776 is about 625.1207883281. The cubic root of 390776 is about 73.1098614777.

The spelling of 390776 in words is "three hundred ninety thousand, seven hundred seventy-six".