442164665 has 8 divisors (see below), whose sum is σ = 531655488. Its totient is φ = 353026480.

The previous prime is 442164631. The next prime is 442164677. The reversal of 442164665 is 566461244.

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

It is not a de Polignac number, because 442164665 - 2⁶ = 442164601 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 85391 + ... + 90420.

It is an arithmetic number, because the mean of its divisors is an integer number (66456936).

Almost surely, 2^442164665 is an apocalyptic number.

It is an amenable number.

442164665 is a deficient number, since it is larger than the sum of its proper divisors (89490823).

442164665 is a wasteful number, since it uses less digits than its factorization.

442164665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176319.

The product of its digits is 138240, while the sum is 38.

The square root of 442164665 is about 21027.7118346243. The cubic root of 442164665 is about 761.8357429149.

The spelling of 442164665 in words is "four hundred forty-two million, one hundred sixty-four thousand, six hundred sixty-five".