839793972 has 12 divisors (see below), whose sum is σ = 1959519296. Its totient is φ = 279931320.

The previous prime is 839793967. The next prime is 839793973. The reversal of 839793972 is 279397938.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839793973) 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, 34991404 + ... + 34991427.

Almost surely, 2^839793972 is an apocalyptic number.

It is an amenable number.

839793972 is an abundant number, since it is smaller than the sum of its proper divisors (1119725324).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

839793972 is a wasteful number, since it uses less digits than its factorization.

839793972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69982838 (or 69982836 counting only the distinct ones).

The product of its digits is 5143824, while the sum is 57.

The square root of 839793972 is about 28979.1989537323. The cubic root of 839793972 is about 943.4616487195.

The spelling of 839793972 in words is "eight hundred thirty-nine million, seven hundred ninety-three thousand, nine hundred seventy-two".