99117270 has 96 divisors (see below), whose sum is σ = 305480448. Its totient is φ = 22651488.

The previous prime is 99117257. The next prime is 99117299. The reversal of 99117270 is 7271199.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14097 + ... + 19923.

It is an arithmetic number, because the mean of its divisors is an integer number (3182088).

Almost surely, 2^99117270 is an apocalyptic number.

99117270 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 99117270, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (152740224).

99117270 is an abundant number, since it is smaller than the sum of its proper divisors (206363178).

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

99117270 is a wasteful number, since it uses less digits than its factorization.

99117270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5856 (or 5844 counting only the distinct ones).

The product of its (nonzero) digits is 7938, while the sum is 36.

The square root of 99117270 is about 9955.7656661856. The cubic root of 99117270 is about 462.7890883189.

The spelling of 99117270 in words is "ninety-nine million, one hundred seventeen thousand, two hundred seventy".