99915941 has 2 divisors, whose sum is σ = 99915942. Its totient is φ = 99915940.

The previous prime is 99915931. The next prime is 99915943. The reversal of 99915941 is 14951999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 83795716 + 16120225 = 9154^2 + 4015^2 .

It is a cyclic number.

It is not a de Polignac number, because 99915941 - 2⁶ = 99915877 is a prime.

Together with 99915943, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99915943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49957970 + 49957971.

It is an arithmetic number, because the mean of its divisors is an integer number (49957971).

Almost surely, 2^99915941 is an apocalyptic number.

It is an amenable number.

99915941 is a deficient number, since it is larger than the sum of its proper divisors (1).

99915941 is an equidigital number, since it uses as much as digits as its factorization.

99915941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131220, while the sum is 47.

The square root of 99915941 is about 9995.7961663891. The cubic root of 99915941 is about 464.0287911311.

The spelling of 99915941 in words is "ninety-nine million, nine hundred fifteen thousand, nine hundred forty-one".