442292665 has 16 divisors (see below), whose sum is σ = 535835088. Its totient is φ = 350461696.

The previous prime is 442292663. The next prime is 442292671. The reversal of 442292665 is 566292244.

It can be written as a sum of positive squares in 8 ways, for example, as 746496 + 441546169 = 864^2 + 21013^2 .

It is a cyclic number.

It is not a de Polignac number, because 442292665 - 2¹ = 442292663 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442292663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 273399 + ... + 275011.

It is an arithmetic number, because the mean of its divisors is an integer number (33489693).

Almost surely, 2^442292665 is an apocalyptic number.

It is an amenable number.

442292665 is a deficient number, since it is larger than the sum of its proper divisors (93542423).

442292665 is a wasteful number, since it uses less digits than its factorization.

442292665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2108.

The product of its digits is 207360, while the sum is 40.

The square root of 442292665 is about 21030.7552170625. The cubic root of 442292665 is about 761.9092491405.

The spelling of 442292665 in words is "four hundred forty-two million, two hundred ninety-two thousand, six hundred sixty-five".