392421873 has 8 divisors (see below), whose sum is σ = 523659136. Its totient is φ = 261399600.

The previous prime is 392421857. The next prime is 392421907. The reversal of 392421873 is 378124293.

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

It is not a de Polignac number, because 392421873 - 2⁴ = 392421857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392421853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49438 + ... + 56823.

It is an arithmetic number, because the mean of its divisors is an integer number (65457392).

Almost surely, 2^392421873 is an apocalyptic number.

It is an amenable number.

392421873 is a deficient number, since it is larger than the sum of its proper divisors (131237263).

392421873 is a wasteful number, since it uses less digits than its factorization.

392421873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107495.

The product of its digits is 72576, while the sum is 39.

The square root of 392421873 is about 19809.6409104254. The cubic root of 392421873 is about 732.1235924819.

The spelling of 392421873 in words is "three hundred ninety-two million, four hundred twenty-one thousand, eight hundred seventy-three".