1315399 has 2 divisors, whose sum is σ = 1315400. Its totient is φ = 1315398.

The previous prime is 1315397. The next prime is 1315441. The reversal of 1315399 is 9935131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1315399 - 2¹ = 1315397 is a prime.

Together with 1315397, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1315399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1315397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657699 + 657700.

It is an arithmetic number, because the mean of its divisors is an integer number (657700).

2^1315399 is an apocalyptic number.

1315399 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315399 is an equidigital number, since it uses as much as digits as its factorization.

1315399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3645, while the sum is 31.

The square root of 1315399 is about 1146.9084531906. The cubic root of 1315399 is about 109.5685301784.

The spelling of 1315399 in words is "one million, three hundred fifteen thousand, three hundred ninety-nine".