442821364 has 12 divisors (see below), whose sum is σ = 775182688. Its totient is φ = 221340600.

The previous prime is 442821331. The next prime is 442821377. The reversal of 442821364 is 463128244.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1722 + ... + 29809.

Almost surely, 2^442821364 is an apocalyptic number.

It is an amenable number.

442821364 is a deficient number, since it is larger than the sum of its proper divisors (332361324).

442821364 is a wasteful number, since it uses less digits than its factorization.

442821364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35046 (or 35044 counting only the distinct ones).

The product of its digits is 36864, while the sum is 34.

The square root of 442821364 is about 21043.3211257159. The cubic root of 442821364 is about 762.2127135592.

The spelling of 442821364 in words is "four hundred forty-two million, eight hundred twenty-one thousand, three hundred sixty-four".