99000987 has 8 divisors (see below), whose sum is σ = 134165520. Its totient is φ = 64918560.

The previous prime is 99000977. The next prime is 99000991. The reversal of 99000987 is 78900099.

It is a happy number.

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

It is not a de Polignac number, because 99000987 - 2¹⁰ = 98999963 is a prime.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (99000917) 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, 270312 + ... + 270677.

It is an arithmetic number, because the mean of its divisors is an integer number (16770690).

Almost surely, 2^99000987 is an apocalyptic number.

99000987 is a deficient number, since it is larger than the sum of its proper divisors (35164533).

99000987 is a wasteful number, since it uses less digits than its factorization.

99000987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541053.

The product of its (nonzero) digits is 40824, while the sum is 42.

The square root of 99000987 is about 9949.9239695588. The cubic root of 99000987 is about 462.6080382620.

The spelling of 99000987 in words is "ninety-nine million, nine hundred eighty-seven", and thus it is an aban number.