1147397 has 4 divisors (see below), whose sum is σ = 1169100. Its totient is φ = 1125696.

The previous prime is 1147387. The next prime is 1147409. The reversal of 1147397 is 7937411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7937411 = 1307 ⋅6073.

It can be written as a sum of positive squares in 2 ways, for example, as 630436 + 516961 = 794^2 + 719^2 .

It is a cyclic number.

It is not a de Polignac number, because 1147397 - 2⁸ = 1147141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1147387) 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, 10772 + ... + 10877.

It is an arithmetic number, because the mean of its divisors is an integer number (292275).

2^1147397 is an apocalyptic number.

It is an amenable number.

1147397 is a deficient number, since it is larger than the sum of its proper divisors (21703).

1147397 is an equidigital number, since it uses as much as digits as its factorization.

1147397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21702.

The product of its digits is 5292, while the sum is 32.

The square root of 1147397 is about 1071.1661869197. The cubic root of 1147397 is about 104.6898481838.

The spelling of 1147397 in words is "one million, one hundred forty-seven thousand, three hundred ninety-seven".