879944985 has 16 divisors (see below), whose sum is σ = 1564346880. Its totient is φ = 469303920.

The previous prime is 879944981. The next prime is 879944987. The reversal of 879944985 is 589449978.

879944985 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 879944985 - 2² = 879944981 is a prime.

It is not an unprimeable number, because it can be changed into a prime (879944981) 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, 3258921 + ... + 3259190.

It is an arithmetic number, because the mean of its divisors is an integer number (97771680).

Almost surely, 2^879944985 is an apocalyptic number.

It is an amenable number.

879944985 is a deficient number, since it is larger than the sum of its proper divisors (684401895).

879944985 is a wasteful number, since it uses less digits than its factorization.

879944985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6518125 (or 6518119 counting only the distinct ones).

The product of its digits is 26127360, while the sum is 63.

The square root of 879944985 is about 29663.8666562537. The cubic root of 879944985 is about 958.2640013022.

The spelling of 879944985 in words is "eight hundred seventy-nine million, nine hundred forty-four thousand, nine hundred eighty-five".