839981252 has 48 divisors (see below), whose sum is σ = 1718623872. Its totient is φ = 355322880.

The previous prime is 839981231. The next prime is 839981257. The reversal of 839981252 is 252189938.

It is a super-2 number, since 2×839981252² = 1411137007422975008, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 839981197 and 839981206.

It is not an unprimeable number, because it can be changed into a prime (839981257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26228 + ... + 48660.

It is an arithmetic number, because the mean of its divisors is an integer number (35804664).

Almost surely, 2^839981252 is an apocalyptic number.

It is an amenable number.

839981252 is an abundant number, since it is smaller than the sum of its proper divisors (878642620).

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

839981252 is a wasteful number, since it uses less digits than its factorization.

839981252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22508 (or 22506 counting only the distinct ones).

The product of its digits is 311040, while the sum is 47.

The square root of 839981252 is about 28982.4300568465. The cubic root of 839981252 is about 943.5317763820.

The spelling of 839981252 in words is "eight hundred thirty-nine million, nine hundred eighty-one thousand, two hundred fifty-two".