442791605 has 8 divisors (see below), whose sum is σ = 562605912. Its totient is φ = 333395968.

The previous prime is 442791553. The next prime is 442791611. The reversal of 442791605 is 506197244.

It can be written as a sum of positive squares in 4 ways, for example, as 18472804 + 424318801 = 4298^2 + 20599^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 442791605 - 2¹⁶ = 442726069 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2604572 + ... + 2604741.

It is an arithmetic number, because the mean of its divisors is an integer number (70325739).

Almost surely, 2^442791605 is an apocalyptic number.

It is an amenable number.

442791605 is a deficient number, since it is larger than the sum of its proper divisors (119814307).

442791605 is a wasteful number, since it uses less digits than its factorization.

442791605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5209335.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 442791605 is about 21042.6140248782. The cubic root of 442791605 is about 762.1956388062.

The spelling of 442791605 in words is "four hundred forty-two million, seven hundred ninety-one thousand, six hundred five".