392872331 has 8 divisors (see below), whose sum is σ = 405820800. Its totient is φ = 379941120.

The previous prime is 392872301. The next prime is 392872379. The reversal of 392872331 is 133278293.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 392872331 - 2⁶ = 392872267 is a prime.

It is a super-2 number, since 2×392872331² = 308697336930747122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392872301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55205 + ... + 61913.

It is an arithmetic number, because the mean of its divisors is an integer number (50727600).

Almost surely, 2^392872331 is an apocalyptic number.

392872331 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

392872331 is a deficient number, since it is larger than the sum of its proper divisors (12948469).

392872331 is a wasteful number, since it uses less digits than its factorization.

392872331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8629.

The product of its digits is 54432, while the sum is 38.

The square root of 392872331 is about 19821.0073154721. The cubic root of 392872331 is about 732.4036183453.

The spelling of 392872331 in words is "three hundred ninety-two million, eight hundred seventy-two thousand, three hundred thirty-one".