99871488 has 72 divisors (see below), whose sum is σ = 295358000. Its totient is φ = 33288192.

The previous prime is 99871477. The next prime is 99871507. The reversal of 99871488 is 88417899.

99871488 is a `hidden beast` number, since 9 + 98 + 71 + 488 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 313 + ... + 14136.

Almost surely, 2^99871488 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 99871488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147679000).

99871488 is an abundant number, since it is smaller than the sum of its proper divisors (195486512).

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

99871488 is a wasteful number, since it uses less digits than its factorization.

99871488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14474 (or 14454 counting only the distinct ones).

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

The square root of 99871488 is about 9993.5723342557. The cubic root of 99871488 is about 463.9599648375.

The spelling of 99871488 in words is "ninety-nine million, eight hundred seventy-one thousand, four hundred eighty-eight".