392274431 has 4 divisors (see below), whose sum is σ = 392559864. Its totient is φ = 391989000.

The previous prime is 392274419. The next prime is 392274457. The reversal of 392274431 is 134472293.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134472293 = 269 ⋅499897.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392274431 is a prime.

It is a super-2 number, since 2×392274431² = 307758458432747522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 392274391 and 392274400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392274331) 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, 140645 + ... + 143406.

It is an arithmetic number, because the mean of its divisors is an integer number (98139966).

Almost surely, 2^392274431 is an apocalyptic number.

392274431 is a deficient number, since it is larger than the sum of its proper divisors (285433).

392274431 is a wasteful number, since it uses less digits than its factorization.

392274431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285432.

The product of its digits is 36288, while the sum is 35.

The square root of 392274431 is about 19805.9190900094. The cubic root of 392274431 is about 732.0318890574.

The spelling of 392274431 in words is "three hundred ninety-two million, two hundred seventy-four thousand, four hundred thirty-one".