99000989 has 8 divisors (see below), whose sum is σ = 100686432. Its totient is φ = 97327440.

The previous prime is 99000977. The next prime is 99000991. The reversal of 99000989 is 98900099.

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 99000989 - 2⁴ = 99000973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99000919) 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, 14687 + ... + 20339.

It is an arithmetic number, because the mean of its divisors is an integer number (12585804).

Almost surely, 2^99000989 is an apocalyptic number.

It is an amenable number.

99000989 is a deficient number, since it is larger than the sum of its proper divisors (1685443).

99000989 is a wasteful number, since it uses less digits than its factorization.

99000989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5947.

The product of its (nonzero) digits is 52488, while the sum is 44.

The square root of 99000989 is about 9949.9240700620. The cubic root of 99000989 is about 462.6080413772.

The spelling of 99000989 in words is "ninety-nine million, nine hundred eighty-nine", and thus it is an aban number.