8098989921 has 24 divisors (see below), whose sum is σ = 12867535200. Its totient is φ = 4908471480.

The previous prime is 8098989917. The next prime is 8098989923. The reversal of 8098989921 is 1299898908.

It is not a de Polignac number, because 8098989921 - 2² = 8098989917 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8098989923) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 326071 + ... + 350028.

It is an arithmetic number, because the mean of its divisors is an integer number (536147300).

Almost surely, 2^8098989921 is an apocalyptic number.

It is an amenable number.

8098989921 is a deficient number, since it is larger than the sum of its proper divisors (4768545279).

8098989921 is a wasteful number, since it uses less digits than its factorization.

8098989921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676138 (or 676113 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 63.

The square root of 8098989921 is about 89994.3882750475. The cubic root of 8098989921 is about 2008.2153677436.

The spelling of 8098989921 in words is "eight billion, ninety-eight million, nine hundred eighty-nine thousand, nine hundred twenty-one".