99517440 has 352 divisors, whose sum is σ = 377303040. Its totient is φ = 22118400.

The previous prime is 99517417. The next prime is 99517493. The reversal of 99517440 is 4471599.

It is a tau number, because it is divible by the number of its divisors (352).

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, 3210225 + ... + 3210255.

Almost surely, 2^99517440 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 99517440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188651520).

99517440 is an abundant number, since it is smaller than the sum of its proper divisors (277785600).

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

99517440 is a wasteful number, since it uses less digits than its factorization.

99517440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 71 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 99517440 is about 9975.8428215364. The cubic root of 99517440 is about 463.4110641402.

It can be divided in two parts, 9951 and 7440, that added together give a triangular number (17391 = T₁₈₆).

The spelling of 99517440 in words is "ninety-nine million, five hundred seventeen thousand, four hundred forty".