442656469 has 2 divisors, whose sum is σ = 442656470. Its totient is φ = 442656468.

The previous prime is 442656457. The next prime is 442656517. The reversal of 442656469 is 964656244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283518244 + 159138225 = 16838^2 + 12615^2 .

It is a cyclic number.

It is not a de Polignac number, because 442656469 - 2¹⁹ = 442132181 is a prime.

It is a super-2 number, since 2×442656469² = 391889499095095922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442656169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221328234 + 221328235.

It is an arithmetic number, because the mean of its divisors is an integer number (221328235).

Almost surely, 2^442656469 is an apocalyptic number.

It is an amenable number.

442656469 is a deficient number, since it is larger than the sum of its proper divisors (1).

442656469 is an equidigital number, since it uses as much as digits as its factorization.

442656469 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 46.

The square root of 442656469 is about 21039.4027719420. The cubic root of 442656469 is about 762.1180925077.

The spelling of 442656469 in words is "four hundred forty-two million, six hundred fifty-six thousand, four hundred sixty-nine".