99187271 has 2 divisors, whose sum is σ = 99187272. Its totient is φ = 99187270.

The previous prime is 99187267. The next prime is 99187307. The reversal of 99187271 is 17278199.

It is a weak prime.

It is an emirp because it is prime and its reverse (17278199) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99187271 - 2² = 99187267 is a prime.

It is a super-2 number, since 2×99187271² = 19676229456854882, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99187211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49593635 + 49593636.

It is an arithmetic number, because the mean of its divisors is an integer number (49593636).

Almost surely, 2^99187271 is an apocalyptic number.

99187271 is a deficient number, since it is larger than the sum of its proper divisors (1).

99187271 is an equidigital number, since it uses as much as digits as its factorization.

99187271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 44.

The square root of 99187271 is about 9959.2806467134. The cubic root of 99187271 is about 462.8980100555.

The spelling of 99187271 in words is "ninety-nine million, one hundred eighty-seven thousand, two hundred seventy-one".