390877 has 2 divisors, whose sum is σ = 390878. Its totient is φ = 390876.

The previous prime is 390869. The next prime is 390883. The reversal of 390877 is 778093.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 251001 + 139876 = 501^2 + 374^2 .

It is a cyclic number.

It is not a de Polignac number, because 390877 - 2³ = 390869 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (390077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195438 + 195439.

It is an arithmetic number, because the mean of its divisors is an integer number (195439).

2³⁹⁰⁸⁷⁷ is an apocalyptic number.

It is an amenable number.

390877 is a deficient number, since it is larger than the sum of its proper divisors (1).

390877 is an equidigital number, since it uses as much as digits as its factorization.

390877 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 390877 is about 625.2015674964. The cubic root of 390877 is about 73.1161595956.

The spelling of 390877 in words is "three hundred ninety thousand, eight hundred seventy-seven".