1319399 has 2 divisors, whose sum is σ = 1319400. Its totient is φ = 1319398.

The previous prime is 1319389. The next prime is 1319401. The reversal of 1319399 is 9939131.

It is a happy number.

It is a strong prime.

It is an emirp because it is prime and its reverse (9939131) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1319399 is a prime.

Together with 1319401, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1319389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 659699 + 659700.

It is an arithmetic number, because the mean of its divisors is an integer number (659700).

2^1319399 is an apocalyptic number.

1319399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1319399 is an equidigital number, since it uses as much as digits as its factorization.

1319399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6561, while the sum is 35.

The square root of 1319399 is about 1148.6509478514. The cubic root of 1319399 is about 109.6794801944.

The spelling of 1319399 in words is "one million, three hundred nineteen thousand, three hundred ninety-nine".