442215772 has 12 divisors (see below), whose sum is σ = 783674080. Its totient is φ = 218308896.

The previous prime is 442215743. The next prime is 442215773. The reversal of 442215772 is 277512244.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442215773) 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 3 ways as a sum of consecutive naturals, for example, 699393 + ... + 700024.

Almost surely, 2^442215772 is an apocalyptic number.

It is an amenable number.

442215772 is a deficient number, since it is larger than the sum of its proper divisors (341458308).

442215772 is a wasteful number, since it uses less digits than its factorization.

442215772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1399500 (or 1399498 counting only the distinct ones).

The product of its digits is 31360, while the sum is 34.

The square root of 442215772 is about 21028.9270292138. The cubic root of 442215772 is about 761.8650936994.

The spelling of 442215772 in words is "four hundred forty-two million, two hundred fifteen thousand, seven hundred seventy-two".