99975890 has 32 divisors (see below), whose sum is σ = 207567360. Its totient is φ = 33960384.

The previous prime is 99975857. The next prime is 99975923. The reversal of 99975890 is 9857999.

It is an interprime number because it is at equal distance from previous prime (99975857) and next prime (99975923).

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, 1079 + ... + 14181.

It is an arithmetic number, because the mean of its divisors is an integer number (6486480).

Almost surely, 2^99975890 is an apocalyptic number.

99975890 is an abundant number, since it is smaller than the sum of its proper divisors (107591470).

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

99975890 is a wasteful number, since it uses less digits than its factorization.

99975890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13226.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99975890 is about 9998.7944273297. The cubic root of 99975890 is about 464.1215774607.

The spelling of 99975890 in words is "ninety-nine million, nine hundred seventy-five thousand, eight hundred ninety".