99397898 has 8 divisors (see below), whose sum is σ = 149221092. Its totient is φ = 49657536.

The previous prime is 99397891. The next prime is 99397901. The reversal of 99397898 is 89879399.

It can be written as a sum of positive squares in 2 ways, for example, as 83850649 + 15547249 = 9157^2 + 3943^2 .

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99397898.

It is not an unprimeable number, because it can be changed into a prime (99397891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17615 + ... + 22562.

Almost surely, 2^99397898 is an apocalyptic number.

99397898 is a deficient number, since it is larger than the sum of its proper divisors (49823194).

99397898 is a wasteful number, since it uses less digits than its factorization.

99397898 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41416.

The product of its digits is 8817984, while the sum is 62.

The square root of 99397898 is about 9969.8494472083. The cubic root of 99397898 is about 463.2254374416.

The spelling of 99397898 in words is "ninety-nine million, three hundred ninety-seven thousand, eight hundred ninety-eight".