1397493 has 20 divisors (see below), whose sum is σ = 2125728. Its totient is φ = 918540.

The previous prime is 1397491. The next prime is 1397497. The reversal of 1397493 is 3947931.

It is not a de Polignac number, because 1397493 - 2¹ = 1397491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397491) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19648 + ... + 19718.

2^1397493 is an apocalyptic number.

It is an amenable number.

1397493 is a deficient number, since it is larger than the sum of its proper divisors (728235).

1397493 is an frugal number, since it uses more digits than its factorization.

1397493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 74 counting only the distinct ones).

The product of its digits is 20412, while the sum is 36.

The square root of 1397493 is about 1182.1560810654. The cubic root of 1397493 is about 111.8020792344.

The spelling of 1397493 in words is "one million, three hundred ninety-seven thousand, four hundred ninety-three".