19244999 has 2 divisors, whose sum is σ = 19245000. Its totient is φ = 19244998.

The previous prime is 19244987. The next prime is 19245001. The reversal of 19244999 is 99944291.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 19244999 - 2⁴ = 19244983 is a prime.

It is a Sophie Germain prime.

Together with 19245001, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19244959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9622499 + 9622500.

It is an arithmetic number, because the mean of its divisors is an integer number (9622500).

Almost surely, 2^19244999 is an apocalyptic number.

19244999 is a deficient number, since it is larger than the sum of its proper divisors (1).

19244999 is an equidigital number, since it uses as much as digits as its factorization.

19244999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 209952, while the sum is 47.

The square root of 19244999 is about 4386.9122398334. The cubic root of 19244999 is about 267.9822099649.

The spelling of 19244999 in words is "nineteen million, two hundred forty-four thousand, nine hundred ninety-nine".