99885500 has 144 divisors (see below), whose sum is σ = 260262912. Its totient is φ = 33264000.

The previous prime is 99885479. The next prime is 99885521. The reversal of 99885500 is 558899.

It is an interprime number because it is at equal distance from previous prime (99885479) and next prime (99885521).

It is a super-2 number, since 2×99885500² = 19954226220500000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a nialpdrome in base 10.

It is a zygodrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 786437 + ... + 786563.

Almost surely, 2^99885500 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 99885500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130131456).

99885500 is an abundant number, since it is smaller than the sum of its proper divisors (160377412).

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

99885500 is a wasteful number, since it uses less digits than its factorization.

99885500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 44.

The square root of 99885500 is about 9994.2733602799. The cubic root of 99885500 is about 463.9816617307.

The spelling of 99885500 in words is "ninety-nine million, eight hundred eighty-five thousand, five hundred".