99980089 has 8 divisors (see below), whose sum is σ = 109177632. Its totient is φ = 90800640.

The previous prime is 99980087. The next prime is 99980123. The reversal of 99980089 is 98008999.

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

It is a cyclic number.

It is not a de Polignac number, because 99980089 - 2¹ = 99980087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99980087) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8742 + ... + 16624.

It is an arithmetic number, because the mean of its divisors is an integer number (13647204).

Almost surely, 2^99980089 is an apocalyptic number.

It is an amenable number.

99980089 is a deficient number, since it is larger than the sum of its proper divisors (9197543).

99980089 is a wasteful number, since it uses less digits than its factorization.

99980089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9047.

The product of its (nonzero) digits is 419904, while the sum is 52.

The square root of 99980089 is about 9999.0044004391. The cubic root of 99980089 is about 464.1280750914.

The spelling of 99980089 in words is "ninety-nine million, nine hundred eighty thousand, eighty-nine".