99949019 has 2 divisors, whose sum is σ = 99949020. Its totient is φ = 99949018.

The previous prime is 99949013. The next prime is 99949027. The reversal of 99949019 is 91094999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99949019 - 2²⁰ = 98900443 is a prime.

It is a super-2 number, since 2×99949019² = 19979612798124722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99949013) 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, 49974509 + 49974510.

It is an arithmetic number, because the mean of its divisors is an integer number (49974510).

Almost surely, 2^99949019 is an apocalyptic number.

99949019 is a deficient number, since it is larger than the sum of its proper divisors (1).

99949019 is an equidigital number, since it uses as much as digits as its factorization.

99949019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 236196, while the sum is 50.

The square root of 99949019 is about 9997.4506250344. The cubic root of 99949019 is about 464.0799923398.

The spelling of 99949019 in words is "ninety-nine million, nine hundred forty-nine thousand, nineteen".