99397632 has 52 divisors (see below), whose sum is σ = 265060760. Its totient is φ = 33128448.

The previous prime is 99397619. The next prime is 99397637. The reversal of 99397632 is 23679399.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (99397637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8244 + ... + 16332.

Almost surely, 2^99397632 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 99397632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132530380).

99397632 is an abundant number, since it is smaller than the sum of its proper divisors (165663128).

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

99397632 is an equidigital number, since it uses as much as digits as its factorization.

99397632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8116 (or 8094 counting only the distinct ones).

The product of its digits is 551124, while the sum is 48.

The square root of 99397632 is about 9969.8361069779. The cubic root of 99397632 is about 463.2250242267.

It can be divided in two parts, 9939 and 7632, that added together give a palindrome (17571).

The spelling of 99397632 in words is "ninety-nine million, three hundred ninety-seven thousand, six hundred thirty-two".