99147888 has 120 divisors (see below), whose sum is σ = 328951168. Its totient is φ = 28320192.

The previous prime is 99147887. The next prime is 99147913. The reversal of 99147888 is 88874199.

99147888 is a `hidden beast` number, since 9 + 91 + 478 + 88 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99147883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25395 + ... + 29037.

Almost surely, 2^99147888 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 99147888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (164475584).

99147888 is an abundant number, since it is smaller than the sum of its proper divisors (229803280).

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

99147888 is a wasteful number, since it uses less digits than its factorization.

99147888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3673 (or 3655 counting only the distinct ones).

The product of its digits is 1161216, while the sum is 54.

The square root of 99147888 is about 9957.3032493743. The cubic root of 99147888 is about 462.8367363137.

The spelling of 99147888 in words is "ninety-nine million, one hundred forty-seven thousand, eight hundred eighty-eight".