1444362457 has 2 divisors, whose sum is σ = 1444362458. Its totient is φ = 1444362456.

The previous prime is 1444362427. The next prime is 1444362481. The reversal of 1444362457 is 7542634441.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1428008521 + 16353936 = 37789^2 + 4044^2 .

It is a cyclic number.

It is not a de Polignac number, because 1444362457 - 2⁷ = 1444362329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1444362427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722181228 + 722181229.

It is an arithmetic number, because the mean of its divisors is an integer number (722181229).

Almost surely, 2^1444362457 is an apocalyptic number.

It is an amenable number.

1444362457 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444362457 is an equidigital number, since it uses as much as digits as its factorization.

1444362457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 322560, while the sum is 40.

The square root of 1444362457 is about 38004.7688718140. The cubic root of 1444362457 is about 1130.3824264903.

Adding to 1444362457 its reverse (7542634441), we get a palindrome (8986996898).

The spelling of 1444362457 in words is "one billion, four hundred forty-four million, three hundred sixty-two thousand, four hundred fifty-seven".