1397369 has 4 divisors (see below), whose sum is σ = 1401744. Its totient is φ = 1392996.

The previous prime is 1397359. The next prime is 1397437. The reversal of 1397369 is 9637931.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9637931 = 31 ⋅310901.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397369 is a prime.

It is a super-2 number, since 2×1397369² = 3905280244322, which contains 22 as substring.

It is a Duffinian number.

Its product of digits (30618) is a multiple of the sum of its prime divisors (4374).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1397329) 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 3 ways as a sum of consecutive naturals, for example, 1667 + ... + 2360.

It is an arithmetic number, because the mean of its divisors is an integer number (350436).

2^1397369 is an apocalyptic number.

It is an amenable number.

1397369 is a deficient number, since it is larger than the sum of its proper divisors (4375).

1397369 is an equidigital number, since it uses as much as digits as its factorization.

1397369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4374.

The product of its digits is 30618, while the sum is 38.

The square root of 1397369 is about 1182.1036333588. The cubic root of 1397369 is about 111.7987723919.

The spelling of 1397369 in words is "one million, three hundred ninety-seven thousand, three hundred sixty-nine".