99887101 has 2 divisors, whose sum is σ = 99887102. Its totient is φ = 99887100.

The previous prime is 99887093. The next prime is 99887113. The reversal of 99887101 is 10178899.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80084601 + 19802500 = 8949^2 + 4450^2 .

It is an emirp because it is prime and its reverse (10178899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99887101 - 2³ = 99887093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99887401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49943550 + 49943551.

It is an arithmetic number, because the mean of its divisors is an integer number (49943551).

Almost surely, 2^99887101 is an apocalyptic number.

It is an amenable number.

99887101 is a deficient number, since it is larger than the sum of its proper divisors (1).

99887101 is an equidigital number, since it uses as much as digits as its factorization.

99887101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 43.

The square root of 99887101 is about 9994.3534558269. The cubic root of 99887101 is about 463.9841406713.

The spelling of 99887101 in words is "ninety-nine million, eight hundred eighty-seven thousand, one hundred one".