19214999 has 2 divisors, whose sum is σ = 19215000. Its totient is φ = 19214998.

The previous prime is 19214989. The next prime is 19215017. The reversal of 19214999 is 99941291.

It is a weak prime.

It is an emirp because it is prime and its reverse (99941291) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 19214999 - 2⁴ = 19214983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (19214969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9607499 + 9607500.

It is an arithmetic number, because the mean of its divisors is an integer number (9607500).

Almost surely, 2^19214999 is an apocalyptic number.

19214999 is a deficient number, since it is larger than the sum of its proper divisors (1).

19214999 is an equidigital number, since it uses as much as digits as its factorization.

19214999 is an evil number, because the sum of its binary digits is even.

The product of its digits is 52488, while the sum is 44.

The square root of 19214999 is about 4383.4916447964. The cubic root of 19214999 is about 267.8428898338.

The spelling of 19214999 in words is "nineteen million, two hundred fourteen thousand, nine hundred ninety-nine".