1398297 has 12 divisors (see below), whose sum is σ = 1913936. Its totient is φ = 908040.

The previous prime is 1398289. The next prime is 1398307. The reversal of 1398297 is 7928931.

It is not a de Polignac number, because 1398297 - 2³ = 1398289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1398217) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6522 + ... + 6732.

2^1398297 is an apocalyptic number.

It is an amenable number.

1398297 is a deficient number, since it is larger than the sum of its proper divisors (515639).

1398297 is an equidigital number, since it uses as much as digits as its factorization.

1398297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 308 (or 261 counting only the distinct ones).

The product of its digits is 27216, while the sum is 39.

The square root of 1398297 is about 1182.4960887885. The cubic root of 1398297 is about 111.8235156302.

The spelling of 1398297 in words is "one million, three hundred ninety-eight thousand, two hundred ninety-seven".