99213888 has 112 divisors (see below), whose sum is σ = 275701760. Its totient is φ = 31449600.

The previous prime is 99213847. The next prime is 99213911. The reversal of 99213888 is 88831299.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 470103 + ... + 470313.

Almost surely, 2^99213888 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 99213888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137850880).

99213888 is an abundant number, since it is smaller than the sum of its proper divisors (176487872).

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

99213888 is a wasteful number, since it uses less digits than its factorization.

99213888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 326 counting only the distinct ones).

The product of its digits is 248832, while the sum is 48.

The square root of 99213888 is about 9960.6168483684. The cubic root of 99213888 is about 462.9394127283.

The spelling of 99213888 in words is "ninety-nine million, two hundred thirteen thousand, eight hundred eighty-eight".