442667044 has 6 divisors (see below), whose sum is σ = 774667334. Its totient is φ = 221333520.

The previous prime is 442667041. The next prime is 442667051. The reversal of 442667044 is 440766244.

It can be written as a sum of positive squares in only one way, i.e., 379782144 + 62884900 = 19488^2 + 7930^2 .

It is a super-2 number, since 2×442667044² = 391908223687395872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442666994 and 442667012.

It is not an unprimeable number, because it can be changed into a prime (442667041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55333377 + ... + 55333384.

Almost surely, 2^442667044 is an apocalyptic number.

It is an amenable number.

442667044 is a deficient number, since it is larger than the sum of its proper divisors (332000290).

442667044 is a wasteful number, since it uses less digits than its factorization.

442667044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110666765 (or 110666763 counting only the distinct ones).

The product of its (nonzero) digits is 129024, while the sum is 37.

The square root of 442667044 is about 21039.6540846089. The cubic root of 442667044 is about 762.1241614236.

The spelling of 442667044 in words is "four hundred forty-two million, six hundred sixty-seven thousand, forty-four".