442222236 has 18 divisors (see below), whose sum is σ = 1117839632. Its totient is φ = 147407400.

The previous prime is 442222229. The next prime is 442222267. The reversal of 442222236 is 632222244.

It is a happy number.

442222236 is a `hidden beast` number, since 4 + 422 + 2 + 2 + 236 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6141940 + ... + 6142011.

Almost surely, 2^442222236 is an apocalyptic number.

It is an amenable number.

442222236 is an abundant number, since it is smaller than the sum of its proper divisors (675617396).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442222236 is a wasteful number, since it uses less digits than its factorization.

442222236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12283961 (or 12283956 counting only the distinct ones).

The product of its digits is 9216, while the sum is 27.

The square root of 442222236 is about 21029.0807217054. The cubic root of 442222236 is about 761.8688058178.

The spelling of 442222236 in words is "four hundred forty-two million, two hundred twenty-two thousand, two hundred thirty-six".