99000831 has 4 divisors (see below), whose sum is σ = 132001112. Its totient is φ = 66000552.

The previous prime is 99000817. The next prime is 99000851. The reversal of 99000831 is 13800099.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 99000831 - 2¹⁵ = 98968063 is a prime.

It is a super-2 number, since 2×99000831² = 19602329077381122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99000851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16500136 + ... + 16500141.

It is an arithmetic number, because the mean of its divisors is an integer number (33000278).

Almost surely, 2^99000831 is an apocalyptic number.

99000831 is a deficient number, since it is larger than the sum of its proper divisors (33000281).

99000831 is a wasteful number, since it uses less digits than its factorization.

99000831 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33000280.

The product of its (nonzero) digits is 1944, while the sum is 30.

The square root of 99000831 is about 9949.9161302998. The cubic root of 99000831 is about 462.6077952783.

The spelling of 99000831 in words is "ninety-nine million, eight hundred thirty-one", and thus it is an aban number.