442346669 has 2 divisors, whose sum is σ = 442346670. Its totient is φ = 442346668.

The previous prime is 442346651. The next prime is 442346689. The reversal of 442346669 is 966643244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 439405444 + 2941225 = 20962^2 + 1715^2 .

It is a cyclic number.

It is not a de Polignac number, because 442346669 - 2⁸ = 442346413 is a prime.

It is a super-2 number, since 2×442346669² = 391341151150791122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442346689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221173334 + 221173335.

It is an arithmetic number, because the mean of its divisors is an integer number (221173335).

Almost surely, 2^442346669 is an apocalyptic number.

It is an amenable number.

442346669 is a deficient number, since it is larger than the sum of its proper divisors (1).

442346669 is an equidigital number, since it uses as much as digits as its factorization.

442346669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 44.

The square root of 442346669 is about 21032.0391070386. The cubic root of 442346669 is about 761.9402576226.

The spelling of 442346669 in words is "four hundred forty-two million, three hundred forty-six thousand, six hundred sixty-nine".