99099 has 36 divisors (see below), whose sum is σ = 193648. Its totient is φ = 47520.

The previous prime is 99089. The next prime is 99103.

99099 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 99099 - 2⁴ = 99083 is a prime.

It is a super-2 number, since 2×99099² = 19641223602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99079) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7617 + ... + 7629.

2⁹⁹⁰⁹⁹ is an apocalyptic number.

99099 is a gapful number since it is divisible by the number (99) formed by its first and last digit.

99099 is a deficient number, since it is larger than the sum of its proper divisors (94549).

99099 is a wasteful number, since it uses less digits than its factorization.

99099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48 (or 34 counting only the distinct ones).

The product of its (nonzero) digits is 6561, while the sum is 36.

The square root of 99099 is about 314.7999364676. The cubic root of 99099 is about 46.2760651713.

It can be divided in two parts, 990 and 99, that added together give a square (1089 = 33²).

The spelling of 99099 in words is "ninety-nine thousand, ninety-nine".