1397293 has 4 divisors (see below), whose sum is σ = 1416508. Its totient is φ = 1378080.

The previous prime is 1397287. The next prime is 1397303. The reversal of 1397293 is 3927931.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 777924 + 619369 = 882^2 + 787^2 .

It is a cyclic number.

It is not a de Polignac number, because 1397293 - 2⁵ = 1397261 is a prime.

It is a Duffinian number.

1397293 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1397233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9498 + ... + 9643.

It is an arithmetic number, because the mean of its divisors is an integer number (354127).

2^1397293 is an apocalyptic number.

It is an amenable number.

1397293 is a deficient number, since it is larger than the sum of its proper divisors (19215).

1397293 is an equidigital number, since it uses as much as digits as its factorization.

1397293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19214.

The product of its digits is 10206, while the sum is 34.

The square root of 1397293 is about 1182.0714868399. The cubic root of 1397293 is about 111.7967455207.

The spelling of 1397293 in words is "one million, three hundred ninety-seven thousand, two hundred ninety-three".