99776101 has 2 divisors, whose sum is σ = 99776102. Its totient is φ = 99776100.

The previous prime is 99776099. The next prime is 99776113. The reversal of 99776101 is 10167799.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 58828900 + 40947201 = 7670^2 + 6399^2 .

It is an emirp because it is prime and its reverse (10167799) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99776101 - 2¹ = 99776099 is a prime.

Together with 99776099, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99776191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49888050 + 49888051.

It is an arithmetic number, because the mean of its divisors is an integer number (49888051).

Almost surely, 2^99776101 is an apocalyptic number.

It is an amenable number.

99776101 is a deficient number, since it is larger than the sum of its proper divisors (1).

99776101 is an equidigital number, since it uses as much as digits as its factorization.

99776101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23814, while the sum is 40.

The square root of 99776101 is about 9988.7987766298. The cubic root of 99776101 is about 463.8122087994.

The spelling of 99776101 in words is "ninety-nine million, seven hundred seventy-six thousand, one hundred one".