1444400317 has 2 divisors, whose sum is σ = 1444400318. Its totient is φ = 1444400316.

The previous prime is 1444400281. The next prime is 1444400323. The reversal of 1444400317 is 7130044441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1405200196 + 39200121 = 37486^2 + 6261^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1444400317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444400017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722200158 + 722200159.

It is an arithmetic number, because the mean of its divisors is an integer number (722200159).

Almost surely, 2^1444400317 is an apocalyptic number.

It is an amenable number.

1444400317 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444400317 is an equidigital number, since it uses as much as digits as its factorization.

1444400317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 1444400317 is about 38005.2669639354. The cubic root of 1444400317 is about 1130.3923030289.

Adding to 1444400317 its reverse (7130044441), we get a palindrome (8574444758).

The spelling of 1444400317 in words is "one billion, four hundred forty-four million, four hundred thousand, three hundred seventeen".