99517284 has 18 divisors (see below), whose sum is σ = 251557670. Its totient is φ = 33172416.

The previous prime is 99517279. The next prime is 99517289. The reversal of 99517284 is 48271599.

It is an interprime number because it is at equal distance from previous prime (99517279) and next prime (99517289).

It can be written as a sum of positive squares in only one way, i.e., 62062884 + 37454400 = 7878^2 + 6120^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (99517289) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1382149 + ... + 1382220.

Almost surely, 2^99517284 is an apocalyptic number.

It is an amenable number.

99517284 is an abundant number, since it is smaller than the sum of its proper divisors (152040386).

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

99517284 is a wasteful number, since it uses less digits than its factorization.

99517284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2764379 (or 2764374 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 99517284 is about 9975.8350026451. The cubic root of 99517284 is about 463.4108219979.

The spelling of 99517284 in words is "ninety-nine million, five hundred seventeen thousand, two hundred eighty-four".