19244899 has 2 divisors, whose sum is σ = 19244900. Its totient is φ = 19244898.

The previous prime is 19244887. The next prime is 19244941. The reversal of 19244899 is 99844291.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19244899 is a prime.

It is a super-2 number, since 2×19244899² = 740732275040402, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (19244809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9622449 + 9622450.

It is an arithmetic number, because the mean of its divisors is an integer number (9622450).

Almost surely, 2^19244899 is an apocalyptic number.

19244899 is a deficient number, since it is larger than the sum of its proper divisors (1).

19244899 is an equidigital number, since it uses as much as digits as its factorization.

19244899 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 186624, while the sum is 46.

The square root of 19244899 is about 4386.9008422803. The cubic root of 19244899 is about 267.9817458050.

The spelling of 19244899 in words is "nineteen million, two hundred forty-four thousand, eight hundred ninety-nine".