99129822 has 64 divisors (see below), whose sum is σ = 233466624. Its totient is φ = 27722240.

The previous prime is 99129803. The next prime is 99129851. The reversal of 99129822 is 22892199.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 58633 + ... + 60299.

It is an arithmetic number, because the mean of its divisors is an integer number (3647916).

Almost surely, 2^99129822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99129822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116733312).

99129822 is an abundant number, since it is smaller than the sum of its proper divisors (134336802).

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

99129822 is a wasteful number, since it uses less digits than its factorization.

99129822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1753.

The product of its digits is 46656, while the sum is 42.

The square root of 99129822 is about 9956.3960347106. The cubic root of 99129822 is about 462.8086230358.

It can be divided in two parts, 99 and 129822, that added together give a palindrome (129921).

The spelling of 99129822 in words is "ninety-nine million, one hundred twenty-nine thousand, eight hundred twenty-two".