442008865 has 8 divisors (see below), whose sum is σ = 548700840. Its totient is φ = 341413632.

The previous prime is 442008841. The next prime is 442008869. The reversal of 442008865 is 568800244.

It can be written as a sum of positive squares in 4 ways, for example, as 289 + 442008576 = 17^2 + 21024^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 442008865 - 2¹³ = 442000673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (442008869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1524024 + ... + 1524313.

It is an arithmetic number, because the mean of its divisors is an integer number (68587605).

Almost surely, 2^442008865 is an apocalyptic number.

It is an amenable number.

442008865 is a deficient number, since it is larger than the sum of its proper divisors (106691975).

442008865 is a wasteful number, since it uses less digits than its factorization.

442008865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3048371.

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 442008865 is about 21024.0068730963. The cubic root of 442008865 is about 761.7462529113.

The spelling of 442008865 in words is "four hundred forty-two million, eight thousand, eight hundred sixty-five".