8879121897 has 16 divisors (see below), whose sum is σ = 12282163200. Its totient is φ = 5699667600.

The previous prime is 8879121877. The next prime is 8879121899. The reversal of 8879121897 is 7981219788.

It is not a de Polignac number, because 8879121897 - 2⁶ = 8879121833 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8879121897.

It is not an unprimeable number, because it can be changed into a prime (8879121899) 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, 221379 + ... + 258392.

It is an arithmetic number, because the mean of its divisors is an integer number (767635200).

Almost surely, 2^8879121897 is an apocalyptic number.

It is an amenable number.

8879121897 is a deficient number, since it is larger than the sum of its proper divisors (3403041303).

8879121897 is a wasteful number, since it uses less digits than its factorization.

8879121897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480004.

The product of its digits is 4064256, while the sum is 60.

The square root of 8879121897 is about 94229.0926253670. The cubic root of 8879121897 is about 2070.7293513797.

The spelling of 8879121897 in words is "eight billion, eight hundred seventy-nine million, one hundred twenty-one thousand, eight hundred ninety-seven".