392844667989 has 8 divisors (see below), whose sum is σ = 523835069632. Its totient is φ = 261875355840.

The previous prime is 392844667979. The next prime is 392844668033. The reversal of 392844667989 is 989766448293.

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

It is not a de Polignac number, because 392844667989 - 2⁹ = 392844667477 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 392844667989.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (392844667939) 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, 5228857 + ... + 5303454.

It is an arithmetic number, because the mean of its divisors is an integer number (65479383704).

Almost surely, 2^392844667989 is an apocalyptic number.

It is an amenable number.

392844667989 is a deficient number, since it is larger than the sum of its proper divisors (130990401643).

392844667989 is a wasteful number, since it uses less digits than its factorization.

392844667989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10544747.

The product of its digits is 1128701952, while the sum is 75.

The spelling of 392844667989 in words is "three hundred ninety-two billion, eight hundred forty-four million, six hundred sixty-seven thousand, nine hundred eighty-nine".