839413681 has 16 divisors (see below), whose sum is σ = 886026240. Its totient is φ = 793702800.

The previous prime is 839413669. The next prime is 839413699. The reversal of 839413681 is 186314938.

It is a cyclic number.

It is not a de Polignac number, because 839413681 - 2¹¹ = 839411633 is a prime.

It is a super-2 number, since 2×839413681² = 1409230655699939522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (839410681) 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, 912940 + ... + 913858.

It is an arithmetic number, because the mean of its divisors is an integer number (55376640).

Almost surely, 2^839413681 is an apocalyptic number.

It is an amenable number.

839413681 is a deficient number, since it is larger than the sum of its proper divisors (46612559).

839413681 is a wasteful number, since it uses less digits than its factorization.

839413681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1356.

The product of its digits is 124416, while the sum is 43.

The square root of 839413681 is about 28972.6367629872. The cubic root of 839413681 is about 943.3192153142.

The spelling of 839413681 in words is "eight hundred thirty-nine million, four hundred thirteen thousand, six hundred eighty-one".