99875880 has 96 divisors (see below), whose sum is σ = 349581960. Its totient is φ = 24583680.

The previous prime is 99875873. The next prime is 99875887. The reversal of 99875880 is 8857899.

It is an interprime number because it is at equal distance from previous prime (99875873) and next prime (99875887).

It can be written as a sum of positive squares in 4 ways, for example, as 91126116 + 8749764 = 9546^2 + 2958^2 .

It is not an unprimeable number, because it can be changed into a prime (99875887) 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, 5991 + ... + 15350.

Almost surely, 2^99875880 is an apocalyptic number.

99875880 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

99875880 is an abundant number, since it is smaller than the sum of its proper divisors (249706080).

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

99875880 is a wasteful number, since it uses less digits than its factorization.

99875880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21371 (or 21364 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 54.

The square root of 99875880 is about 9993.7920730822. The cubic root of 99875880 is about 463.9667658519.

The spelling of 99875880 in words is "ninety-nine million, eight hundred seventy-five thousand, eight hundred eighty".