392881 has 4 divisors (see below), whose sum is σ = 399600. Its totient is φ = 386164.

The previous prime is 392879. The next prime is 392893. The reversal of 392881 is 188293.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 392881 - 2¹ = 392879 is a prime.

It is a super-2 number, since 2×392881² = 308710960322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392831) 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 in 3 ways as a sum of consecutive naturals, for example, 3271 + ... + 3388.

It is an arithmetic number, because the mean of its divisors is an integer number (99900).

2³⁹²⁸⁸¹ is an apocalyptic number.

It is an amenable number.

392881 is a deficient number, since it is larger than the sum of its proper divisors (6719).

392881 is an equidigital number, since it uses as much as digits as its factorization.

392881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6718.

The product of its digits is 3456, while the sum is 31.

The square root of 392881 is about 626.8022016554. The cubic root of 392881 is about 73.2409005303.

The spelling of 392881 in words is "three hundred ninety-two thousand, eight hundred eighty-one".