99926819 has 2 divisors, whose sum is σ = 99926820.
Its totient is φ = 99926818.
The previous prime is 99926809. The next prime is 99926851. The reversal of 99926819 is 91862999.
It is a weak prime.
It is an emirp because it is prime and its reverse (91862999) is a distict prime.
It is a cyclic number.
It is not a de Polignac number, because 99926819 - 224 = 83149603 is a prime.
It is a super-2 number, since 2×999268192 = 19970738310917522, which contains 22 as substring.
It is a Chen prime.
It is not a weakly prime, because it can be changed into another prime (99926809) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49963409 + 49963410.
It is an arithmetic number, because the mean of its divisors is an integer number (49963410).
Almost surely, 299926819 is an apocalyptic number.
99926819 is a deficient number, since it is larger than the sum of its proper divisors (1).
99926819 is an equidigital number, since it uses as much as digits as its factorization.
99926819 is an evil number, because the sum of its binary digits is even.
The product of its digits is 629856, while the sum is 53.
The square root of 99926819 is about 9996.3402803226.
The cubic root of 99926819 is about 464.0456303594.
The spelling of 99926819 in words is "ninety-nine million, nine hundred twenty-six thousand, eight hundred nineteen".