1444430357 has 2 divisors, whose sum is σ = 1444430358. Its totient is φ = 1444430356.

The previous prime is 1444430333. The next prime is 1444430419. The reversal of 1444430357 is 7530344441.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 840942001 + 603488356 = 28999^2 + 24566^2 .

It is an emirp because it is prime and its reverse (7530344441) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1444430357 - 2⁸ = 1444430101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1444430327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 722215178 + 722215179.

It is an arithmetic number, because the mean of its divisors is an integer number (722215179).

Almost surely, 2^1444430357 is an apocalyptic number.

It is an amenable number.

1444430357 is a deficient number, since it is larger than the sum of its proper divisors (1).

1444430357 is an equidigital number, since it uses as much as digits as its factorization.

1444430357 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80640, while the sum is 35.

The square root of 1444430357 is about 38005.6621702609. The cubic root of 1444430357 is about 1130.4001394413.

Adding to 1444430357 its reverse (7530344441), we get a palindrome (8974774798).

The spelling of 1444430357 in words is "one billion, four hundred forty-four million, four hundred thirty thousand, three hundred fifty-seven".