442441513 has 2 divisors, whose sum is σ = 442441514. Its totient is φ = 442441512.

The previous prime is 442441477. The next prime is 442441529. The reversal of 442441513 is 315144244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 440874009 + 1567504 = 20997^2 + 1252^2 .

It is a cyclic number.

It is not a de Polignac number, because 442441513 - 2¹⁷ = 442310441 is a prime.

It is not a weakly prime, because it can be changed into another prime (442441553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221220756 + 221220757.

It is an arithmetic number, because the mean of its divisors is an integer number (221220757).

Almost surely, 2^442441513 is an apocalyptic number.

It is an amenable number.

442441513 is a deficient number, since it is larger than the sum of its proper divisors (1).

442441513 is an equidigital number, since it uses as much as digits as its factorization.

442441513 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7680, while the sum is 28.

The square root of 442441513 is about 21034.2937366578. The cubic root of 442441513 is about 761.9947098601.

Adding to 442441513 its reverse (315144244), we get a palindrome (757585757).

The spelling of 442441513 in words is "four hundred forty-two million, four hundred forty-one thousand, five hundred thirteen".