392979923 has 8 divisors (see below), whose sum is σ = 461258592. Its totient is φ = 327735936.

The previous prime is 392979919. The next prime is 392979947. The reversal of 392979923 is 329979293.

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

It is not a de Polignac number, because 392979923 - 2² = 392979919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (392979913) 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, 758390 + ... + 758907.

It is an arithmetic number, because the mean of its divisors is an integer number (57657324).

Almost surely, 2^392979923 is an apocalyptic number.

392979923 is a deficient number, since it is larger than the sum of its proper divisors (68278669).

392979923 is a wasteful number, since it uses less digits than its factorization.

392979923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1517341.

The product of its digits is 1653372, while the sum is 53.

The square root of 392979923 is about 19823.7212197912. The cubic root of 392979923 is about 732.4704709176.

The spelling of 392979923 in words is "three hundred ninety-two million, nine hundred seventy-nine thousand, nine hundred twenty-three".