99915223 has 2 divisors, whose sum is σ = 99915224. Its totient is φ = 99915222.

The previous prime is 99915203. The next prime is 99915259. The reversal of 99915223 is 32251999.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99915223 is a prime.

It is equal to p_5756827 and since 99915223 and 5756827 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99915203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49957611 + 49957612.

It is an arithmetic number, because the mean of its divisors is an integer number (49957612).

Almost surely, 2^99915223 is an apocalyptic number.

99915223 is a deficient number, since it is larger than the sum of its proper divisors (1).

99915223 is an equidigital number, since it uses as much as digits as its factorization.

99915223 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 43740, while the sum is 40.

The square root of 99915223 is about 9995.7602512265. The cubic root of 99915223 is about 464.0276796186.

The spelling of 99915223 in words is "ninety-nine million, nine hundred fifteen thousand, two hundred twenty-three".