1397189 has 2 divisors, whose sum is σ = 1397190. Its totient is φ = 1397188.

The previous prime is 1397177. The next prime is 1397219. The reversal of 1397189 is 9817931.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1304164 + 93025 = 1142^2 + 305^2 .

It is an emirp because it is prime and its reverse (9817931) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1397189 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1397119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 698594 + 698595.

It is an arithmetic number, because the mean of its divisors is an integer number (698595).

2^1397189 is an apocalyptic number.

It is an amenable number.

1397189 is a deficient number, since it is larger than the sum of its proper divisors (1).

1397189 is an equidigital number, since it uses as much as digits as its factorization.

1397189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 38.

The square root of 1397189 is about 1182.0274954501. The cubic root of 1397189 is about 111.7939717885.

The spelling of 1397189 in words is "one million, three hundred ninety-seven thousand, one hundred eighty-nine".