99877888 has 44 divisors (see below), whose sum is σ = 217833552. Its totient is φ = 45393920.

The previous prime is 99877879. The next prime is 99877913. The reversal of 99877888 is 88877899.

It is a tau number, because it is divible by the number of its divisors (44).

It is a super-3 number, since 3×99877888³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (64).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6831 + ... + 15697.

Almost surely, 2^99877888 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 99877888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108916776).

99877888 is an abundant number, since it is smaller than the sum of its proper divisors (117955664).

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

99877888 is a wasteful number, since it uses less digits than its factorization.

99877888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8898 (or 8880 counting only the distinct ones).

The product of its digits is 16257024, while the sum is 64.

The square root of 99877888 is about 9993.8925349435. The cubic root of 99877888 is about 463.9698751746.

The spelling of 99877888 in words is "ninety-nine million, eight hundred seventy-seven thousand, eight hundred eighty-eight".