839453913 has 6 divisors (see below), whose sum is σ = 1212544554. Its totient is φ = 559635936.

The previous prime is 839453911. The next prime is 839453917. The reversal of 839453913 is 319354938.

It can be written as a sum of positive squares in only one way, i.e., 801852489 + 37601424 = 28317^2 + 6132^2 .

It is not a de Polignac number, because 839453913 - 2¹ = 839453911 is a prime.

It is not an unprimeable number, because it can be changed into a prime (839453911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 46636320 + ... + 46636337.

It is an arithmetic number, because the mean of its divisors is an integer number (202090759).

Almost surely, 2^839453913 is an apocalyptic number.

It is an amenable number.

839453913 is a deficient number, since it is larger than the sum of its proper divisors (373090641).

839453913 is a wasteful number, since it uses less digits than its factorization.

839453913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93272663 (or 93272660 counting only the distinct ones).

The product of its digits is 349920, while the sum is 45.

The square root of 839453913 is about 28973.3310649639. The cubic root of 839453913 is about 943.3342857589.

The spelling of 839453913 in words is "eight hundred thirty-nine million, four hundred fifty-three thousand, nine hundred thirteen".