1249397 has 2 divisors, whose sum is σ = 1249398. Its totient is φ = 1249396.

The previous prime is 1249373. The next prime is 1249403. The reversal of 1249397 is 7939421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1100401 + 148996 = 1049^2 + 386^2 .

It is a cyclic number.

It is not a de Polignac number, because 1249397 - 2⁶ = 1249333 is a prime.

It is a Chen prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1245397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 624698 + 624699.

It is an arithmetic number, because the mean of its divisors is an integer number (624699).

2^1249397 is an apocalyptic number.

It is an amenable number.

1249397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1249397 is an equidigital number, since it uses as much as digits as its factorization.

1249397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 35.

The square root of 1249397 is about 1117.7642864218. The cubic root of 1249397 is about 107.7044100606.

The spelling of 1249397 in words is "one million, two hundred forty-nine thousand, three hundred ninety-seven".