442344539 has 16 divisors (see below), whose sum is σ = 576451008. Its totient is φ = 329398272.

The previous prime is 442344503. The next prime is 442344557. The reversal of 442344539 is 935443244.

It is a happy number.

It is not a de Polignac number, because 442344539 - 2¹² = 442340443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442344559) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141422 + ... + 144515.

It is an arithmetic number, because the mean of its divisors is an integer number (36028188).

Almost surely, 2^442344539 is an apocalyptic number.

442344539 is a deficient number, since it is larger than the sum of its proper divisors (134106469).

442344539 is a wasteful number, since it uses less digits than its factorization.

442344539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285974.

The product of its digits is 207360, while the sum is 38.

The square root of 442344539 is about 21031.9884699474. The cubic root of 442344539 is about 761.9390346487.

The spelling of 442344539 in words is "four hundred forty-two million, three hundred forty-four thousand, five hundred thirty-nine".