99916237 has 2 divisors, whose sum is σ = 99916238. Its totient is φ = 99916236.

The previous prime is 99916217. The next prime is 99916249. The reversal of 99916237 is 73261999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 90269001 + 9647236 = 9501^2 + 3106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99916237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99916207) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49958118 + 49958119.

It is an arithmetic number, because the mean of its divisors is an integer number (49958119).

Almost surely, 2^99916237 is an apocalyptic number.

It is an amenable number.

99916237 is a deficient number, since it is larger than the sum of its proper divisors (1).

99916237 is an equidigital number, since it uses as much as digits as its factorization.

99916237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 183708, while the sum is 46.

The square root of 99916237 is about 9995.8109726025. The cubic root of 99916237 is about 464.0292493576.

The spelling of 99916237 in words is "ninety-nine million, nine hundred sixteen thousand, two hundred thirty-seven".