392479 has 4 divisors (see below), whose sum is σ = 415584. Its totient is φ = 369376.

The previous prime is 392477. The next prime is 392489. The reversal of 392479 is 974293.

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

It is not a de Polignac number, because 392479 - 2¹ = 392477 is a prime.

It is a Duffinian number.

392479 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392473) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11527 + ... + 11560.

It is an arithmetic number, because the mean of its divisors is an integer number (103896).

2³⁹²⁴⁷⁹ is an apocalyptic number.

392479 is a deficient number, since it is larger than the sum of its proper divisors (23105).

392479 is a wasteful number, since it uses less digits than its factorization.

392479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23104.

The product of its digits is 13608, while the sum is 34.

The square root of 392479 is about 626.4814442583. The cubic root of 392479 is about 73.2159117171.

The spelling of 392479 in words is "three hundred ninety-two thousand, four hundred seventy-nine".