99647400 has 96 divisors (see below), whose sum is σ = 325202400. Its totient is φ = 25171200.

The previous prime is 99647399. The next prime is 99647411. The reversal of 99647400 is 474699.

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, 7030 + ... + 15770.

It is an arithmetic number, because the mean of its divisors is an integer number (3387525).

Almost surely, 2^99647400 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 99647400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (162601200).

99647400 is an abundant number, since it is smaller than the sum of its proper divisors (225555000).

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

99647400 is a wasteful number, since it uses less digits than its factorization.

99647400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8779 (or 8770 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 99647400 is about 9982.3544316960. The cubic root of 99647400 is about 463.6126995017.

The spelling of 99647400 in words is "ninety-nine million, six hundred forty-seven thousand, four hundred".