1315969 has 2 divisors, whose sum is σ = 1315970. Its totient is φ = 1315968.

The previous prime is 1315967. The next prime is 1316009. The reversal of 1315969 is 9695131.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 970225 + 345744 = 985^2 + 588^2 .

It is a cyclic number.

It is not a de Polignac number, because 1315969 - 2¹ = 1315967 is a prime.

It is a super-2 number, since 2×1315969² = 3463548817922, which contains 22 as substring.

Together with 1315967, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1315961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 657984 + 657985.

It is an arithmetic number, because the mean of its divisors is an integer number (657985).

2^1315969 is an apocalyptic number.

It is an amenable number.

1315969 is a deficient number, since it is larger than the sum of its proper divisors (1).

1315969 is an equidigital number, since it uses as much as digits as its factorization.

1315969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7290, while the sum is 34.

The square root of 1315969 is about 1147.1569203906. The cubic root of 1315969 is about 109.5843542854.

The spelling of 1315969 in words is "one million, three hundred fifteen thousand, nine hundred sixty-nine".