1299797 has 4 divisors (see below), whose sum is σ = 1318176. Its totient is φ = 1281420.

The previous prime is 1299791. The next prime is 1299811. The reversal of 1299797 is 7979921.

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 1299797 - 2⁸ = 1299541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1299791) 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, 9083 + ... + 9224.

It is an arithmetic number, because the mean of its divisors is an integer number (329544).

2^1299797 is an apocalyptic number.

It is an amenable number.

1299797 is a deficient number, since it is larger than the sum of its proper divisors (18379).

1299797 is an equidigital number, since it uses as much as digits as its factorization.

1299797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18378.

The product of its digits is 71442, while the sum is 44.

The square root of 1299797 is about 1140.0864002346. The cubic root of 1299797 is about 109.1336071705.

The spelling of 1299797 in words is "one million, two hundred ninety-nine thousand, seven hundred ninety-seven".