99671171 has 2 divisors, whose sum is σ = 99671172. Its totient is φ = 99671170.

The previous prime is 99671129. The next prime is 99671179. The reversal of 99671171 is 17117699.

It is a strong prime.

It is an emirp because it is prime and its reverse (17117699) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99671171 - 2¹⁰ = 99670147 is a prime.

It is a super-2 number, since 2×99671171² = 19868684657022482, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99671179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49835585 + 49835586.

It is an arithmetic number, because the mean of its divisors is an integer number (49835586).

Almost surely, 2^99671171 is an apocalyptic number.

99671171 is a deficient number, since it is larger than the sum of its proper divisors (1).

99671171 is an equidigital number, since it uses as much as digits as its factorization.

99671171 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23814, while the sum is 41.

The square root of 99671171 is about 9983.5450116679. The cubic root of 99671171 is about 463.6495616820.

The spelling of 99671171 in words is "ninety-nine million, six hundred seventy-one thousand, one hundred seventy-one".