879945020 has 12 divisors (see below), whose sum is σ = 1847884584. Its totient is φ = 351978000.

The previous prime is 879945019. The next prime is 879945029. The reversal of 879945020 is 20549978.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879945029) 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, 21998606 + ... + 21998645.

It is an arithmetic number, because the mean of its divisors is an integer number (153990382).

Almost surely, 2^879945020 is an apocalyptic number.

It is an amenable number.

879945020 is an abundant number, since it is smaller than the sum of its proper divisors (967939564).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

879945020 is a wasteful number, since it uses less digits than its factorization.

879945020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43997260 (or 43997258 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 44.

The square root of 879945020 is about 29663.8672461970. The cubic root of 879945020 is about 958.2640140072.

The spelling of 879945020 in words is "eight hundred seventy-nine million, nine hundred forty-five thousand, twenty".