1244422397 has 2 divisors, whose sum is σ = 1244422398. Its totient is φ = 1244422396.

The previous prime is 1244422391. The next prime is 1244422427. The reversal of 1244422397 is 7932244421.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1084121476 + 160300921 = 32926^2 + 12661^2 .

It is a cyclic number.

It is not a de Polignac number, because 1244422397 - 2¹⁴ = 1244406013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1244422397.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1244422391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622211198 + 622211199.

It is an arithmetic number, because the mean of its divisors is an integer number (622211199).

Almost surely, 2^1244422397 is an apocalyptic number.

It is an amenable number.

1244422397 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244422397 is an equidigital number, since it uses as much as digits as its factorization.

1244422397 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 1244422397 is about 35276.3716529918. The cubic root of 1244422397 is about 1075.6127451732.

The spelling of 1244422397 in words is "one billion, two hundred forty-four million, four hundred twenty-two thousand, three hundred ninety-seven".