392320427 has 4 divisors (see below), whose sum is σ = 394953600. Its totient is φ = 389687256.

The previous prime is 392320393. The next prime is 392320447. The reversal of 392320427 is 724023293.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-392320427 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 392320393 and 392320402.

It is not an unprimeable number, because it can be changed into a prime (392320447) 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, 1316363 + ... + 1316660.

It is an arithmetic number, because the mean of its divisors is an integer number (98738400).

Almost surely, 2^392320427 is an apocalyptic number.

392320427 is a deficient number, since it is larger than the sum of its proper divisors (2633173).

392320427 is a wasteful number, since it uses less digits than its factorization.

392320427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2633172.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 392320427 is about 19807.0802240007. The cubic root of 392320427 is about 732.0604993195.

The spelling of 392320427 in words is "three hundred ninety-two million, three hundred twenty thousand, four hundred twenty-seven".