393958 has 8 divisors (see below), whose sum is σ = 625752. Its totient is φ = 185376.

The previous prime is 393947. The next prime is 393961. The reversal of 393958 is 859393.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5760 + ... + 5827.

It is an arithmetic number, because the mean of its divisors is an integer number (78219).

2³⁹³⁹⁵⁸ is an apocalyptic number.

393958 is a deficient number, since it is larger than the sum of its proper divisors (231794).

393958 is a wasteful number, since it uses less digits than its factorization.

393958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11606.

The product of its digits is 29160, while the sum is 37.

The square root of 393958 is about 627.6607363855. The cubic root of 393958 is about 73.3077642723.

It can be divided in two parts, 3 and 93958, that added together give a triangular number (93961 = T₄₃₃).

The spelling of 393958 in words is "three hundred ninety-three thousand, nine hundred fifty-eight".