99099400 has 48 divisors (see below), whose sum is σ = 234778500. Its totient is φ = 38887680.

The previous prime is 99099397. The next prime is 99099463. The reversal of 99099400 is 499099.

It can be written as a sum of positive squares in 6 ways, for example, as 66814276 + 32285124 = 8174^2 + 5682^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5926 + ... + 15274.

Almost surely, 2^99099400 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 99099400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (117389250).

99099400 is an abundant number, since it is smaller than the sum of its proper divisors (135679100).

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

99099400 is a wasteful number, since it uses less digits than its factorization.

99099400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9418 (or 9409 counting only the distinct ones).

The product of its (nonzero) digits is 26244, while the sum is 40.

The square root of 99099400 is about 9954.8681558321. The cubic root of 99099400 is about 462.7612743363.

It can be divided in two parts, 99099 and 400, that added together give a palindrome (99499).

The spelling of 99099400 in words is "ninety-nine million, ninety-nine thousand, four hundred".