1298997 has 40 divisors (see below), whose sum is σ = 2323200. Its totient is φ = 707616.

The previous prime is 1298989. The next prime is 1299007. The reversal of 1298997 is 7998921.

It is not a de Polignac number, because 1298997 - 2³ = 1298989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1298197) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 16404 + ... + 16482.

It is an arithmetic number, because the mean of its divisors is an integer number (58080).

2^1298997 is an apocalyptic number.

It is an amenable number.

1298997 is a deficient number, since it is larger than the sum of its proper divisors (1024203).

1298997 is an equidigital number, since it uses as much as digits as its factorization.

1298997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127 (or 118 counting only the distinct ones).

The product of its digits is 81648, while the sum is 45.

The square root of 1298997 is about 1139.7354956305. The cubic root of 1298997 is about 109.1112126982. Note that the first 3 decimals are identical.

The spelling of 1298997 in words is "one million, two hundred ninety-eight thousand, nine hundred ninety-seven".