442424669 has 2 divisors, whose sum is σ = 442424670. Its totient is φ = 442424668.

The previous prime is 442424659. The next prime is 442424681. The reversal of 442424669 is 966424244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 414651769 + 27772900 = 20363^2 + 5270^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442424669 is a prime.

It is a super-2 number, since 2×442424669² = 391479175479519122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442424659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221212334 + 221212335.

It is an arithmetic number, because the mean of its divisors is an integer number (221212335).

Almost surely, 2^442424669 is an apocalyptic number.

It is an amenable number.

442424669 is a deficient number, since it is larger than the sum of its proper divisors (1).

442424669 is an equidigital number, since it uses as much as digits as its factorization.

442424669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 331776, while the sum is 41.

The square root of 442424669 is about 21033.8933390849. The cubic root of 442424669 is about 761.9850398801.

The spelling of 442424669 in words is "four hundred forty-two million, four hundred twenty-four thousand, six hundred sixty-nine".