442814887 has 2 divisors, whose sum is σ = 442814888. Its totient is φ = 442814886.

The previous prime is 442814863. The next prime is 442814909. The reversal of 442814887 is 788418244.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442814887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442814857) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221407443 + 221407444.

It is an arithmetic number, because the mean of its divisors is an integer number (221407444).

Almost surely, 2^442814887 is an apocalyptic number.

442814887 is a deficient number, since it is larger than the sum of its proper divisors (1).

442814887 is an equidigital number, since it uses as much as digits as its factorization.

442814887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 458752, while the sum is 46.

The square root of 442814887 is about 21043.1672283428. The cubic root of 442814887 is about 762.2089973309.

The spelling of 442814887 in words is "four hundred forty-two million, eight hundred fourteen thousand, eight hundred eighty-seven".