99940100 has 72 divisors (see below), whose sum is σ = 237693120. Its totient is φ = 36247680.

The previous prime is 99940091. The next prime is 99940117. The reversal of 99940100 is 104999.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76049 + ... + 77351.

Almost surely, 2^99940100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99940100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118846560).

99940100 is an abundant number, since it is smaller than the sum of its proper divisors (137753020).

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

99940100 is a wasteful number, since it uses less digits than its factorization.

99940100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389 (or 1382 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 32.

The square root of 99940100 is about 9997.0045513644. The cubic root of 99940100 is about 464.0661877936.

The spelling of 99940100 in words is "ninety-nine million, nine hundred forty thousand, one hundred".