99901408 has 36 divisors (see below), whose sum is σ = 200196360. Its totient is φ = 49073280.

The previous prime is 99901387. The next prime is 99901421. The reversal of 99901408 is 80410999.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 118653 + ... + 119491.

It is an arithmetic number, because the mean of its divisors is an integer number (5561010).

Almost surely, 2^99901408 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 99901408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100098180).

99901408 is an abundant number, since it is smaller than the sum of its proper divisors (100294952).

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

99901408 is an equidigital number, since it uses as much as digits as its factorization.

99901408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971 (or 902 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 99901408 is about 9995.0691843529. The cubic root of 99901408 is about 464.0062920272.

The spelling of 99901408 in words is "ninety-nine million, nine hundred one thousand, four hundred eight".