1299497 has 4 divisors (see below), whose sum is σ = 1375956. Its totient is φ = 1223040.

The previous prime is 1299491. The next prime is 1299499. The reversal of 1299497 is 7949921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7949921 = 7 ⋅1135703.

It can be written as a sum of positive squares in 2 ways, for example, as 346921 + 952576 = 589^2 + 976^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1299497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1299491) 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, 38204 + ... + 38237.

It is an arithmetic number, because the mean of its divisors is an integer number (343989).

2^1299497 is an apocalyptic number.

1299497 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1299497 is a deficient number, since it is larger than the sum of its proper divisors (76459).

1299497 is an equidigital number, since it uses as much as digits as its factorization.

1299497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76458.

The product of its digits is 40824, while the sum is 41.

The square root of 1299497 is about 1139.9548236663. The cubic root of 1299497 is about 109.1252103205.

The spelling of 1299497 in words is "one million, two hundred ninety-nine thousand, four hundred ninety-seven".