442074865 has 4 divisors (see below), whose sum is σ = 530489844. Its totient is φ = 353659888.

The previous prime is 442074847. The next prime is 442074883. The reversal of 442074865 is 568470244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (442074847) and next prime (442074883).

It can be written as a sum of positive squares in 2 ways, for example, as 75620416 + 366454449 = 8696^2 + 19143^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442074865 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44207482 + ... + 44207491.

It is an arithmetic number, because the mean of its divisors is an integer number (132622461).

Almost surely, 2^442074865 is an apocalyptic number.

It is an amenable number.

442074865 is a deficient number, since it is larger than the sum of its proper divisors (88414979).

442074865 is an equidigital number, since it uses as much as digits as its factorization.

442074865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88414978.

The product of its (nonzero) digits is 215040, while the sum is 40.

The square root of 442074865 is about 21025.5764486970. The cubic root of 442074865 is about 761.7841652358.

The spelling of 442074865 in words is "four hundred forty-two million, seventy-four thousand, eight hundred sixty-five".