392431 has 4 divisors (see below), whose sum is σ = 422632. Its totient is φ = 362232.

The previous prime is 392423. The next prime is 392437. The reversal of 392431 is 134293.

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

It is not a de Polignac number, because 392431 - 2³ = 392423 is a prime.

It is a super-2 number, since 2×392431² = 308004179522, which contains 22 as substring.

It is a Duffinian number.

392431 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392437) 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, 15081 + ... + 15106.

It is an arithmetic number, because the mean of its divisors is an integer number (105658).

2³⁹²⁴³¹ is an apocalyptic number.

392431 is a deficient number, since it is larger than the sum of its proper divisors (30201).

392431 is a wasteful number, since it uses less digits than its factorization.

392431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30200.

The product of its digits is 648, while the sum is 22.

The square root of 392431 is about 626.4431338917. The cubic root of 392431 is about 73.2129268380.

The spelling of 392431 in words is "three hundred ninety-two thousand, four hundred thirty-one".