99581098 has 16 divisors (see below), whose sum is σ = 150845184. Its totient is φ = 49302000.

The previous prime is 99581089. The next prime is 99581123. The reversal of 99581098 is 89018599.

It is a happy number.

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, 132223 + ... + 132973.

It is an arithmetic number, because the mean of its divisors is an integer number (9427824).

Almost surely, 2^99581098 is an apocalyptic number.

99581098 is a deficient number, since it is larger than the sum of its proper divisors (51264086).

99581098 is a wasteful number, since it uses less digits than its factorization.

99581098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1317.

The product of its (nonzero) digits is 233280, while the sum is 49.

The square root of 99581098 is about 9979.0329190759. The cubic root of 99581098 is about 463.5098526331.

The spelling of 99581098 in words is "ninety-nine million, five hundred eighty-one thousand, ninety-eight".