879421785 has 16 divisors (see below), whose sum is σ = 1534991040. Its totient is φ = 426386240.

The previous prime is 879421757. The next prime is 879421789. The reversal of 879421785 is 587124978.

It is not a de Polignac number, because 879421785 - 2⁷ = 879421657 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (879421789) 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, 2664750 + ... + 2665079.

It is an arithmetic number, because the mean of its divisors is an integer number (95936940).

Almost surely, 2^879421785 is an apocalyptic number.

It is an amenable number.

879421785 is a deficient number, since it is larger than the sum of its proper divisors (655569255).

879421785 is a wasteful number, since it uses less digits than its factorization.

879421785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5329848.

The product of its digits is 1128960, while the sum is 51.

The square root of 879421785 is about 29655.0465351178. The cubic root of 879421785 is about 958.0740412728.

The spelling of 879421785 in words is "eight hundred seventy-nine million, four hundred twenty-one thousand, seven hundred eighty-five".