879481890 has 72 divisors (see below), whose sum is σ = 2659997340. Its totient is φ = 201023424.

The previous prime is 879481879. The next prime is 879481909. The reversal of 879481890 is 98184978.

879481890 is a `hidden beast` number, since 8 + 79 + 481 + 8 + 90 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 873025209 + 6456681 = 29547^2 + 2541^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 95305 + ... + 104124.

Almost surely, 2^879481890 is an apocalyptic number.

879481890 is an abundant number, since it is smaller than the sum of its proper divisors (1780515450).

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

879481890 is a wasteful number, since it uses less digits than its factorization.

879481890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199456 (or 199446 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 879481890 is about 29656.0599203603. The cubic root of 879481890 is about 958.0958676324.

The spelling of 879481890 in words is "eight hundred seventy-nine million, four hundred eighty-one thousand, eight hundred ninety".