1002397 has 4 divisors (see below), whose sum is σ = 1093536. Its totient is φ = 911260.

The previous prime is 1002377. The next prime is 1002403. The reversal of 1002397 is 7932001.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1002397 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

1002397 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002347) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45553 + ... + 45574.

It is an arithmetic number, because the mean of its divisors is an integer number (273384).

2^1002397 is an apocalyptic number.

It is an amenable number.

1002397 is a deficient number, since it is larger than the sum of its proper divisors (91139).

1002397 is an equidigital number, since it uses as much as digits as its factorization.

1002397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91138.

The product of its (nonzero) digits is 378, while the sum is 22.

The square root of 1002397 is about 1001.1977826584. The cubic root of 1002397 is about 100.0798362448.

Adding to 1002397 its reverse (7932001), we get a palindrome (8934398).

The spelling of 1002397 in words is "one million, two thousand, three hundred ninety-seven".