99917127 has 6 divisors (see below), whose sum is σ = 144324752. Its totient is φ = 66611412.

The previous prime is 99917101. The next prime is 99917189. The reversal of 99917127 is 72171999.

It is not a de Polignac number, because 99917127 - 2¹⁴ = 99900743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99917197) 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, 5550943 + ... + 5550960.

Almost surely, 2^99917127 is an apocalyptic number.

99917127 is a deficient number, since it is larger than the sum of its proper divisors (44407625).

99917127 is a wasteful number, since it uses less digits than its factorization.

99917127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11101909 (or 11101906 counting only the distinct ones).

The product of its digits is 71442, while the sum is 45.

The square root of 99917127 is about 9995.8554911523. The cubic root of 99917127 is about 464.0306271277.

The spelling of 99917127 in words is "ninety-nine million, nine hundred seventeen thousand, one hundred twenty-seven".