1297913 has 4 divisors (see below), whose sum is σ = 1354368. Its totient is φ = 1241460.

The previous prime is 1297873. The next prime is 1297927. The reversal of 1297913 is 3197921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1297913 - 2⁸ = 1297657 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1297913.

It is not an unprimeable number, because it can be changed into a prime (1297963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28193 + ... + 28238.

It is an arithmetic number, because the mean of its divisors is an integer number (338592).

2^1297913 is an apocalyptic number.

It is an amenable number.

1297913 is a deficient number, since it is larger than the sum of its proper divisors (56455).

1297913 is an equidigital number, since it uses as much as digits as its factorization.

1297913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56454.

The product of its digits is 3402, while the sum is 32.

The square root of 1297913 is about 1139.2598474448. The cubic root of 1297913 is about 109.0808535134.

The spelling of 1297913 in words is "one million, two hundred ninety-seven thousand, nine hundred thirteen".