442867393 has 12 divisors (see below), whose sum is σ = 462959280. Its totient is φ = 423517392.

The previous prime is 442867351. The next prime is 442867423. The reversal of 442867393 is 393768244.

It is a de Polignac number, because none of the positive numbers 2^k-442867393 is a prime.

It is a super-2 number, since 2×442867393² = 392263055565232898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442867303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 78030 + ... + 83512.

It is an arithmetic number, because the mean of its divisors is an integer number (38579940).

Almost surely, 2^442867393 is an apocalyptic number.

It is an amenable number.

442867393 is a deficient number, since it is larger than the sum of its proper divisors (20091887).

442867393 is an equidigital number, since it uses as much as digits as its factorization.

442867393 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5616 (or 5579 counting only the distinct ones).

The product of its digits is 870912, while the sum is 46.

The square root of 442867393 is about 21044.4147697198. The cubic root of 442867393 is about 762.2391220061.

The spelling of 442867393 in words is "four hundred forty-two million, eight hundred sixty-seven thousand, three hundred ninety-three".