442814863 has 2 divisors, whose sum is σ = 442814864. Its totient is φ = 442814862.

The previous prime is 442814857. The next prime is 442814887. The reversal of 442814863 is 368418244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442814863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442814803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221407431 + 221407432.

It is an arithmetic number, because the mean of its divisors is an integer number (221407432).

Almost surely, 2^442814863 is an apocalyptic number.

442814863 is a deficient number, since it is larger than the sum of its proper divisors (1).

442814863 is an equidigital number, since it uses as much as digits as its factorization.

442814863 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 147456, while the sum is 40.

The square root of 442814863 is about 21043.1666580864. The cubic root of 442814863 is about 762.2089835607.

It can be divided in two parts, 4428 and 14863, that added together give a palindrome (19291).

The spelling of 442814863 in words is "four hundred forty-two million, eight hundred fourteen thousand, eight hundred sixty-three".