879093889 has 4 divisors (see below), whose sum is σ = 881182420. Its totient is φ = 877005360.

The previous prime is 879093857. The next prime is 879093893. The reversal of 879093889 is 988390978.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 988390978 = 2 ⋅494195489.

It can be written as a sum of positive squares in 2 ways, for example, as 212576400 + 666517489 = 14580^2 + 25817^2 .

It is a cyclic number.

It is not a de Polignac number, because 879093889 - 2⁵ = 879093857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (879093689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1043634 + ... + 1044475.

It is an arithmetic number, because the mean of its divisors is an integer number (220295605).

Almost surely, 2^879093889 is an apocalyptic number.

It is an amenable number.

879093889 is a deficient number, since it is larger than the sum of its proper divisors (2088531).

879093889 is a wasteful number, since it uses less digits than its factorization.

879093889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088530.

The product of its (nonzero) digits is 7838208, while the sum is 61.

The square root of 879093889 is about 29649.5175171536. The cubic root of 879093889 is about 957.9549525324.

The spelling of 879093889 in words is "eight hundred seventy-nine million, ninety-three thousand, eight hundred eighty-nine".