839428725 has 24 divisors (see below), whose sum is σ = 1398799360. Its totient is φ = 444165120.

The previous prime is 839428663. The next prime is 839428727. The reversal of 839428725 is 527824938.

It is not a de Polignac number, because 839428725 - 2⁶ = 839428661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (839428727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 34540 + ... + 53589.

Almost surely, 2^839428725 is an apocalyptic number.

It is an amenable number.

839428725 is a deficient number, since it is larger than the sum of its proper divisors (559370635).

839428725 is a wasteful number, since it uses less digits than its factorization.

839428725 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88269 (or 88264 counting only the distinct ones).

The product of its digits is 967680, while the sum is 48.

The square root of 839428725 is about 28972.8963861054. The cubic root of 839428725 is about 943.3248506800.

The spelling of 839428725 in words is "eight hundred thirty-nine million, four hundred twenty-eight thousand, seven hundred twenty-five".