99138419 has 2 divisors, whose sum is σ = 99138420. Its totient is φ = 99138418.

The previous prime is 99138397. The next prime is 99138433. The reversal of 99138419 is 91483199.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99138419 - 2⁸ = 99138163 is a prime.

It is a super-2 number, since 2×99138419² = 19656852243639122, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99138419.

It is not a weakly prime, because it can be changed into another prime (99138449) 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, 49569209 + 49569210.

It is an arithmetic number, because the mean of its divisors is an integer number (49569210).

Almost surely, 2^99138419 is an apocalyptic number.

99138419 is a deficient number, since it is larger than the sum of its proper divisors (1).

99138419 is an equidigital number, since it uses as much as digits as its factorization.

99138419 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 69984, while the sum is 44.

The square root of 99138419 is about 9956.8277578755. The cubic root of 99138419 is about 462.8220016224.

The spelling of 99138419 in words is "ninety-nine million, one hundred thirty-eight thousand, four hundred nineteen".