442667473 has 2 divisors, whose sum is σ = 442667474. Its totient is φ = 442667472.

The previous prime is 442667441. The next prime is 442667483. The reversal of 442667473 is 374766244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 423412929 + 19254544 = 20577^2 + 4388^2 .

It is a cyclic number.

It is not a de Polignac number, because 442667473 - 2⁵ = 442667441 is a prime.

It is not a weakly prime, because it can be changed into another prime (442667483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221333736 + 221333737.

It is an arithmetic number, because the mean of its divisors is an integer number (221333737).

Almost surely, 2^442667473 is an apocalyptic number.

It is an amenable number.

442667473 is a deficient number, since it is larger than the sum of its proper divisors (1).

442667473 is an equidigital number, since it uses as much as digits as its factorization.

442667473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 677376, while the sum is 43.

The square root of 442667473 is about 21039.6642796410. The cubic root of 442667473 is about 762.1244076216.

The spelling of 442667473 in words is "four hundred forty-two million, six hundred sixty-seven thousand, four hundred seventy-three".