442264439 has 2 divisors, whose sum is σ = 442264440. Its totient is φ = 442264438.

The previous prime is 442264399. The next prime is 442264483. The reversal of 442264439 is 934462244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442264439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442264139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221132219 + 221132220.

It is an arithmetic number, because the mean of its divisors is an integer number (221132220).

Almost surely, 2^442264439 is an apocalyptic number.

442264439 is a deficient number, since it is larger than the sum of its proper divisors (1).

442264439 is an equidigital number, since it uses as much as digits as its factorization.

442264439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 165888, while the sum is 38.

The square root of 442264439 is about 21030.0841415340. The cubic root of 442264439 is about 761.8930410882.

The spelling of 442264439 in words is "four hundred forty-two million, two hundred sixty-four thousand, four hundred thirty-nine".