879621847 has 12 divisors (see below), whose sum is σ = 953415360. Its totient is φ = 811170048.

The previous prime is 879621811. The next prime is 879621857. The reversal of 879621847 is 748126978.

It is a de Polignac number, because none of the positive numbers 2^k-879621847 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 879621794 and 879621803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879621857) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 241383 + ... + 244999.

It is an arithmetic number, because the mean of its divisors is an integer number (79451280).

Almost surely, 2^879621847 is an apocalyptic number.

879621847 is a deficient number, since it is larger than the sum of its proper divisors (73793513).

879621847 is a wasteful number, since it uses less digits than its factorization.

879621847 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5082 (or 5069 counting only the distinct ones).

The product of its digits is 1354752, while the sum is 52.

The square root of 879621847 is about 29658.4194959880. The cubic root of 879621847 is about 958.1466873679.

The spelling of 879621847 in words is "eight hundred seventy-nine million, six hundred twenty-one thousand, eight hundred forty-seven".