390958 has 4 divisors (see below), whose sum is σ = 586440. Its totient is φ = 195478.

The previous prime is 390953. The next prime is 390959. The reversal of 390958 is 859093.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (390953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97738 + ... + 97741.

It is an arithmetic number, because the mean of its divisors is an integer number (146610).

2³⁹⁰⁹⁵⁸ is an apocalyptic number.

390958 is a deficient number, since it is larger than the sum of its proper divisors (195482).

390958 is a wasteful number, since it uses less digits than its factorization.

390958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195481.

The product of its (nonzero) digits is 9720, while the sum is 34.

The square root of 390958 is about 625.2663432490. The cubic root of 390958 is about 73.1212097775.

The spelling of 390958 in words is "three hundred ninety thousand, nine hundred fifty-eight".