99815798 has 8 divisors (see below), whose sum is σ = 150253608. Its totient is φ = 49731264.

The previous prime is 99815773. The next prime is 99815803. The reversal of 99815798 is 89751899.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 87611 + ... + 88742.

It is an arithmetic number, because the mean of its divisors is an integer number (18781701).

Almost surely, 2^99815798 is an apocalyptic number.

99815798 is a deficient number, since it is larger than the sum of its proper divisors (50437810).

99815798 is a wasteful number, since it uses less digits than its factorization.

99815798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176638.

The product of its digits is 1632960, while the sum is 56.

The square root of 99815798 is about 9990.7856547921. The cubic root of 99815798 is about 463.8737115434.

The spelling of 99815798 in words is "ninety-nine million, eight hundred fifteen thousand, seven hundred ninety-eight".