442616887 has 2 divisors, whose sum is σ = 442616888. Its totient is φ = 442616886.

The previous prime is 442616851. The next prime is 442616929. The reversal of 442616887 is 788616244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442616887 - 2²³ = 434228279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442616827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221308443 + 221308444.

It is an arithmetic number, because the mean of its divisors is an integer number (221308444).

Almost surely, 2^442616887 is an apocalyptic number.

442616887 is a deficient number, since it is larger than the sum of its proper divisors (1).

442616887 is an equidigital number, since it uses as much as digits as its factorization.

442616887 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 516096, while the sum is 46.

The square root of 442616887 is about 21038.4620873295. The cubic root of 442616887 is about 762.0953758266.

The spelling of 442616887 in words is "four hundred forty-two million, six hundred sixteen thousand, eight hundred eighty-seven".