442218469 has 8 divisors (see below), whose sum is σ = 551337408. Its totient is φ = 344585760.

The previous prime is 442218461. The next prime is 442218479. The reversal of 442218469 is 964812244.

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 442218469 - 2³ = 442218461 is a prime.

It is a super-2 number, since 2×442218469² = 391114348649407922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442218461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2871472 + ... + 2871625.

It is an arithmetic number, because the mean of its divisors is an integer number (68917176).

Almost surely, 2^442218469 is an apocalyptic number.

It is an amenable number.

442218469 is a deficient number, since it is larger than the sum of its proper divisors (109118939).

442218469 is a wasteful number, since it uses less digits than its factorization.

442218469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5743115.

The product of its digits is 110592, while the sum is 40.

The square root of 442218469 is about 21028.9911550697. The cubic root of 442218469 is about 761.8666425255.

The spelling of 442218469 in words is "four hundred forty-two million, two hundred eighteen thousand, four hundred sixty-nine".