879985398 has 8 divisors (see below), whose sum is σ = 1759970808. Its totient is φ = 293328464.

The previous prime is 879985391. The next prime is 879985409. The reversal of 879985398 is 893589978.

It is a sphenic number, since it is the product of 3 distinct primes.

879985398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879985391) 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, 73332111 + ... + 73332122.

It is an arithmetic number, because the mean of its divisors is an integer number (219996351).

Almost surely, 2^879985398 is an apocalyptic number.

879985398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

879985398 is a wasteful number, since it uses less digits than its factorization.

879985398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146664238.

The product of its digits is 39191040, while the sum is 66.

The square root of 879985398 is about 29664.5478307019. The cubic root of 879985398 is about 958.2786710565.

The spelling of 879985398 in words is "eight hundred seventy-nine million, nine hundred eighty-five thousand, three hundred ninety-eight".