99487788 has 48 divisors (see below), whose sum is σ = 244527360. Its totient is φ = 31420224.

The previous prime is 99487733. The next prime is 99487789. The reversal of 99487788 is 88778499.

It is a super-2 number, since 2×99487788² = 19795639922265888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (99487789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28431 + ... + 31737.

It is an arithmetic number, because the mean of its divisors is an integer number (5094320).

Almost surely, 2^99487788 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 99487788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122263680).

99487788 is an abundant number, since it is smaller than the sum of its proper divisors (145039572).

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

99487788 is a wasteful number, since it uses less digits than its factorization.

99487788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3446 (or 3444 counting only the distinct ones).

The product of its digits is 8128512, while the sum is 60.

The square root of 99487788 is about 9974.3565205982. The cubic root of 99487788 is about 463.3650339173.

The spelling of 99487788 in words is "ninety-nine million, four hundred eighty-seven thousand, seven hundred eighty-eight".