99019910 has 32 divisors (see below), whose sum is σ = 194890752. Its totient is φ = 35923680.

The previous prime is 99019909. The next prime is 99019919. The reversal of 99019910 is 1991099.

It is a happy number.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99019919) 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, 66029 + ... + 67511.

It is an arithmetic number, because the mean of its divisors is an integer number (6090336).

Almost surely, 2^99019910 is an apocalyptic number.

99019910 is a deficient number, since it is larger than the sum of its proper divisors (95870842).

99019910 is a wasteful number, since it uses less digits than its factorization.

99019910 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108.

The product of its (nonzero) digits is 6561, while the sum is 38.

The square root of 99019910 is about 9950.8748359127. The cubic root of 99019910 is about 462.6375106087.

The spelling of 99019910 in words is "ninety-nine million, nineteen thousand, nine hundred ten".