442552469 has 2 divisors, whose sum is σ = 442552470. Its totient is φ = 442552468.

The previous prime is 442552457. The next prime is 442552471. The reversal of 442552469 is 964255244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 299463025 + 143089444 = 17305^2 + 11962^2 .

It is a cyclic number.

It is not a de Polignac number, because 442552469 - 2¹² = 442548373 is a prime.

It is a super-2 number, since 2×442552469² = 391705375635991922, which contains 22 as substring.

Together with 442552471, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442552969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221276234 + 221276235.

It is an arithmetic number, because the mean of its divisors is an integer number (221276235).

Almost surely, 2^442552469 is an apocalyptic number.

It is an amenable number.

442552469 is a deficient number, since it is larger than the sum of its proper divisors (1).

442552469 is an equidigital number, since it uses as much as digits as its factorization.

442552469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 345600, while the sum is 41.

The square root of 442552469 is about 21036.9310737094. The cubic root of 442552469 is about 762.0584025109.

The spelling of 442552469 in words is "four hundred forty-two million, five hundred fifty-two thousand, four hundred sixty-nine".