99109100 has 18 divisors (see below), whose sum is σ = 215066964. Its totient is φ = 39643600.

The previous prime is 99109091. The next prime is 99109103. The reversal of 99109100 is 190199.

It is a super-2 number, since 2×99109100² = 19645227405620000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99109103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 495446 + ... + 495645.

Almost surely, 2^99109100 is an apocalyptic number.

It is an amenable number.

99109100 is an abundant number, since it is smaller than the sum of its proper divisors (115957864).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99109100 is a wasteful number, since it uses less digits than its factorization.

99109100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 991105 (or 991098 counting only the distinct ones).

The product of its (nonzero) digits is 729, while the sum is 29.

The square root of 99109100 is about 9955.3553427289. The cubic root of 99109100 is about 462.7763724361.

Adding to 99109100 its reverse (190199), we get a palindrome (99299299).

The spelling of 99109100 in words is "ninety-nine million, one hundred nine thousand, one hundred".