442255969 has 8 divisors (see below), whose sum is σ = 471256488. Its totient is φ = 413587200.

The previous prime is 442255963. The next prime is 442255981. The reversal of 442255969 is 969552244.

It can be written as a sum of positive squares in 4 ways, for example, as 163532944 + 278723025 = 12788^2 + 16695^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442255969 is a prime.

It is a super-2 number, since 2×442255969² = 391180684232257922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442255963) 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 in 7 ways as a sum of consecutive naturals, for example, 80182 + ... + 85519.

It is an arithmetic number, because the mean of its divisors is an integer number (58907061).

Almost surely, 2^442255969 is an apocalyptic number.

It is an amenable number.

442255969 is a deficient number, since it is larger than the sum of its proper divisors (29000519).

442255969 is a wasteful number, since it uses less digits than its factorization.

442255969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165875.

The product of its digits is 777600, while the sum is 46.

The square root of 442255969 is about 21029.8827623931. The cubic root of 442255969 is about 761.8881772747. Note that the first 3 decimals are identical.

The spelling of 442255969 in words is "four hundred forty-two million, two hundred fifty-five thousand, nine hundred sixty-nine".