99139170 has 64 divisors (see below), whose sum is σ = 257572224. Its totient is φ = 24276480.

The previous prime is 99139153. The next prime is 99139193. The reversal of 99139170 is 7193199.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 90325 + ... + 91415.

It is an arithmetic number, because the mean of its divisors is an integer number (4024566).

Almost surely, 2^99139170 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99139170, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128786112).

99139170 is an abundant number, since it is smaller than the sum of its proper divisors (158433054).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99139170 is a wasteful number, since it uses less digits than its factorization.

99139170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1347.

The product of its (nonzero) digits is 15309, while the sum is 39.

The square root of 99139170 is about 9956.8654706188. The cubic root of 99139170 is about 462.8231702862.

The spelling of 99139170 in words is "ninety-nine million, one hundred thirty-nine thousand, one hundred seventy".