1003397 has 2 divisors, whose sum is σ = 1003398. Its totient is φ = 1003396.

The previous prime is 1003381. The next prime is 1003411. The reversal of 1003397 is 7933001.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 982081 + 21316 = 991^2 + 146^2 .

It is a cyclic number.

It is not a de Polignac number, because 1003397 - 2⁴ = 1003381 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 (1003307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 501698 + 501699.

It is an arithmetic number, because the mean of its divisors is an integer number (501699).

2^1003397 is an apocalyptic number.

It is an amenable number.

1003397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1003397 is an equidigital number, since it uses as much as digits as its factorization.

1003397 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567, while the sum is 23.

The square root of 1003397 is about 1001.6970599937. The cubic root of 1003397 is about 100.1131053569.

Adding to 1003397 its reverse (7933001), we get a palindrome (8936398).

The spelling of 1003397 in words is "one million, three thousand, three hundred ninety-seven".