1442744393 has 2 divisors, whose sum is σ = 1442744394. Its totient is φ = 1442744392.

The previous prime is 1442744279. The next prime is 1442744411. The reversal of 1442744393 is 3934472441.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1441948729 + 795664 = 37973^2 + 892^2 .

It is a cyclic number.

It is not a de Polignac number, because 1442744393 - 2⁸ = 1442744137 is a prime.

It is a super-2 number, since 2×1442744393² = 4163022767065876898, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1442744393.

It is not a weakly prime, because it can be changed into another prime (1442744893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 721372196 + 721372197.

It is an arithmetic number, because the mean of its divisors is an integer number (721372197).

Almost surely, 2^1442744393 is an apocalyptic number.

It is an amenable number.

1442744393 is a deficient number, since it is larger than the sum of its proper divisors (1).

1442744393 is an equidigital number, since it uses as much as digits as its factorization.

1442744393 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 1442744393 is about 37983.4752622769. The cubic root of 1442744393 is about 1129.9601607068.

The spelling of 1442744393 in words is "one billion, four hundred forty-two million, seven hundred forty-four thousand, three hundred ninety-three".