99819017 has 2 divisors, whose sum is σ = 99819018. Its totient is φ = 99819016.

The previous prime is 99819001. The next prime is 99819029. The reversal of 99819017 is 71091899.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 82646281 + 17172736 = 9091^2 + 4144^2 .

It is an emirp because it is prime and its reverse (71091899) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99819017 - 2⁴ = 99819001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99819047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49909508 + 49909509.

It is an arithmetic number, because the mean of its divisors is an integer number (49909509).

Almost surely, 2^99819017 is an apocalyptic number.

It is an amenable number.

99819017 is a deficient number, since it is larger than the sum of its proper divisors (1).

99819017 is an equidigital number, since it uses as much as digits as its factorization.

99819017 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 40824, while the sum is 44.

The square root of 99819017 is about 9990.9467519350. The cubic root of 99819017 is about 463.8786980400.

The spelling of 99819017 in words is "ninety-nine million, eight hundred nineteen thousand, seventeen".