392139 has 24 divisors (see below), whose sum is σ = 657072. Its totient is φ = 222720.

The previous prime is 392131. The next prime is 392143. The reversal of 392139 is 931293.

It is not a de Polignac number, because 392139 - 2³ = 392131 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 392139.

It is not an unprimeable number, because it can be changed into a prime (392131) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1567 + ... + 1799.

It is an arithmetic number, because the mean of its divisors is an integer number (27378).

2³⁹²¹³⁹ is an apocalyptic number.

392139 is a deficient number, since it is larger than the sum of its proper divisors (264933).

392139 is a wasteful number, since it uses less digits than its factorization.

392139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 264 counting only the distinct ones).

The product of its digits is 1458, while the sum is 27.

The square root of 392139 is about 626.2100286645. The cubic root of 392139 is about 73.1947635778.

The spelling of 392139 in words is "three hundred ninety-two thousand, one hundred thirty-nine".