442304069 has 2 divisors, whose sum is σ = 442304070.
Its totient is φ = 442304068.
The previous prime is 442304041. The next prime is 442304087. The reversal of 442304069 is 960403244.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 440580100 + 1723969 = 20990^2 + 1313^2
It is a cyclic number.
It is not a de Polignac number, because 442304069 - 212 = 442299973 is a prime.
It is a super-4 number, since 4×4423040694 (a number of 36 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (442304029) 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, 221152034 + 221152035.
It is an arithmetic number, because the mean of its divisors is an integer number (221152035).
Almost surely, 2442304069 is an apocalyptic number.
It is an amenable number.
442304069 is a deficient number, since it is larger than the sum of its proper divisors (1).
442304069 is an equidigital number, since it uses as much as digits as its factorization.
442304069 is an odious number, because the sum of its binary digits is odd.
The product of its (nonzero) digits is 20736, while the sum is 32.
The square root of 442304069 is about 21031.0263420500.
The cubic root of 442304069 is about 761.9157973978.
The spelling of 442304069 in words is "four hundred forty-two million, three hundred four thousand, sixty-nine".