99271770 has 64 divisors (see below), whose sum is σ = 270103680. Its totient is φ = 23148288.

The previous prime is 99271759. The next prime is 99271771. The reversal of 99271770 is 7717299.

It is not an unprimeable number, because it can be changed into a prime (99271771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 712 + ... + 14108.

It is an arithmetic number, because the mean of its divisors is an integer number (4220370).

Almost surely, 2^99271770 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99271770, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135051840).

99271770 is an abundant number, since it is smaller than the sum of its proper divisors (170831910).

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

99271770 is a wasteful number, since it uses less digits than its factorization.

99271770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13439.

The product of its (nonzero) digits is 55566, while the sum is 42.

The square root of 99271770 is about 9963.5219676578. The cubic root of 99271770 is about 463.0294224718.

The spelling of 99271770 in words is "ninety-nine million, two hundred seventy-one thousand, seven hundred seventy".