99889197 has 8 divisors (see below), whose sum is σ = 133758144. Its totient is φ = 66306528.

The previous prime is 99889187. The next prime is 99889199. The reversal of 99889197 is 79198899.

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

It is not a de Polignac number, because 99889197 - 2¹¹ = 99887149 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99889197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99889199) 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 7 ways as a sum of consecutive naturals, for example, 70753 + ... + 72150.

It is an arithmetic number, because the mean of its divisors is an integer number (16719768).

Almost surely, 2^99889197 is an apocalyptic number.

It is an amenable number.

99889197 is a deficient number, since it is larger than the sum of its proper divisors (33868947).

99889197 is a wasteful number, since it uses less digits than its factorization.

99889197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143139.

The product of its digits is 2939328, while the sum is 60.

The square root of 99889197 is about 9994.4583144861. The cubic root of 99889197 is about 463.9873860151.

The spelling of 99889197 in words is "ninety-nine million, eight hundred eighty-nine thousand, one hundred ninety-seven".