839122873 has 4 divisors (see below), whose sum is σ = 888483060. Its totient is φ = 789762688.

The previous prime is 839122861. The next prime is 839122877. The reversal of 839122873 is 378221938.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 405941904 + 433180969 = 20148^2 + 20813^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-839122873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (839122877) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24680068 + ... + 24680101.

It is an arithmetic number, because the mean of its divisors is an integer number (222120765).

Almost surely, 2^839122873 is an apocalyptic number.

It is an amenable number.

839122873 is a deficient number, since it is larger than the sum of its proper divisors (49360187).

839122873 is a wasteful number, since it uses less digits than its factorization.

839122873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49360186.

The product of its digits is 145152, while the sum is 43.

The square root of 839122873 is about 28967.6176617961. The cubic root of 839122873 is about 943.2102676579.

The spelling of 839122873 in words is "eight hundred thirty-nine million, one hundred twenty-two thousand, eight hundred seventy-three".