1219399 has 2 divisors, whose sum is σ = 1219400. Its totient is φ = 1219398.

The previous prime is 1219357. The next prime is 1219411. The reversal of 1219399 is 9939121.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1219399 - 2⁷ = 1219271 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1219349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609699 + 609700.

It is an arithmetic number, because the mean of its divisors is an integer number (609700).

2^1219399 is an apocalyptic number.

1219399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1219399 is an equidigital number, since it uses as much as digits as its factorization.

1219399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4374, while the sum is 34.

The square root of 1219399 is about 1104.2640082879. The cubic root of 1219399 is about 106.8354240573.

The spelling of 1219399 in words is "one million, two hundred nineteen thousand, three hundred ninety-nine".