99989158 has 16 divisors (see below), whose sum is σ = 157347360. Its totient is φ = 47588800.

The previous prime is 99989117. The next prime is 99989159. The reversal of 99989158 is 85198999.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (58).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99989159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8023 + ... + 16258.

It is an arithmetic number, because the mean of its divisors is an integer number (9834210).

Almost surely, 2^99989158 is an apocalyptic number.

99989158 is a deficient number, since it is larger than the sum of its proper divisors (57358202).

99989158 is a wasteful number, since it uses less digits than its factorization.

99989158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24383.

The product of its digits is 2099520, while the sum is 58.

The square root of 99989158 is about 9999.4578853056. The cubic root of 99989158 is about 464.1421080530.

The spelling of 99989158 in words is "ninety-nine million, nine hundred eighty-nine thousand, one hundred fifty-eight".