1244244401 has 2 divisors, whose sum is σ = 1244244402. Its totient is φ = 1244244400.

The previous prime is 1244244373. The next prime is 1244244403. The reversal of 1244244401 is 1044424421.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 786241600 + 458002801 = 28040^2 + 21401^2 .

It is an emirp because it is prime and its reverse (1044424421) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1244244401 - 2²⁶ = 1177135537 is a prime.

Together with 1244244403, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1244244403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 622122200 + 622122201.

It is an arithmetic number, because the mean of its divisors is an integer number (622122201).

Almost surely, 2^1244244401 is an apocalyptic number.

It is an amenable number.

1244244401 is a deficient number, since it is larger than the sum of its proper divisors (1).

1244244401 is an equidigital number, since it uses as much as digits as its factorization.

1244244401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 1244244401 is about 35273.8486842590. The cubic root of 1244244401 is about 1075.5614592926.

Adding to 1244244401 its reverse (1044424421), we get a palindrome (2288668822).

The spelling of 1244244401 in words is "one billion, two hundred forty-four million, two hundred forty-four thousand, four hundred one".