839979925 has 12 divisors (see below), whose sum is σ = 1077492420. Its totient is φ = 648811520.

The previous prime is 839979923. The next prime is 839979929. The reversal of 839979925 is 529979938.

839979925 is nontrivially palindromic in base 12.

839979925 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 6 ways, for example, as 24820324 + 815159601 = 4982^2 + 28551^2 .

It is not a de Polignac number, because 839979925 - 2¹ = 839979923 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839979923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 578572 + ... + 580021.

It is an arithmetic number, because the mean of its divisors is an integer number (89791035).

Almost surely, 2^839979925 is an apocalyptic number.

It is an amenable number.

839979925 is a deficient number, since it is larger than the sum of its proper divisors (237512495).

839979925 is a wasteful number, since it uses less digits than its factorization.

839979925 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158632 (or 1158627 counting only the distinct ones).

The product of its digits is 11022480, while the sum is 61.

The square root of 839979925 is about 28982.4071636571. The cubic root of 839979925 is about 943.5312795188.

The spelling of 839979925 in words is "eight hundred thirty-nine million, nine hundred seventy-nine thousand, nine hundred twenty-five".