442335613 has 4 divisors (see below), whose sum is σ = 442383580. Its totient is φ = 442287648.

The previous prime is 442335581. The next prime is 442335623. The reversal of 442335613 is 316533244.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 197037369 + 245298244 = 14037^2 + 15662^2 .

It is a cyclic number.

It is not a de Polignac number, because 442335613 - 2⁵ = 442335581 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442335623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5298 + ... + 30211.

It is an arithmetic number, because the mean of its divisors is an integer number (110595895).

Almost surely, 2^442335613 is an apocalyptic number.

It is an amenable number.

442335613 is a deficient number, since it is larger than the sum of its proper divisors (47967).

442335613 is a wasteful number, since it uses less digits than its factorization.

442335613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47966.

The product of its digits is 25920, while the sum is 31.

The square root of 442335613 is about 21031.7762683041. The cubic root of 442335613 is about 761.9339095988.

Adding to 442335613 its reverse (316533244), we get a palindrome (758868857).

The spelling of 442335613 in words is "four hundred forty-two million, three hundred thirty-five thousand, six hundred thirteen".