442486172 has 24 divisors (see below), whose sum is σ = 781452672. Its totient is φ = 219222000.

The previous prime is 442486141. The next prime is 442486199. The reversal of 442486172 is 271684244.

It is a super-2 number, since 2×442486172² = 391588024822427168, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 344243 + ... + 345525.

It is an arithmetic number, because the mean of its divisors is an integer number (32560528).

Almost surely, 2^442486172 is an apocalyptic number.

It is an amenable number.

442486172 is a deficient number, since it is larger than the sum of its proper divisors (338966500).

442486172 is a wasteful number, since it uses less digits than its factorization.

442486172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009 (or 2007 counting only the distinct ones).

The product of its digits is 86016, while the sum is 38.

The square root of 442486172 is about 21035.3552858039. The cubic root of 442486172 is about 762.0203469789.

The spelling of 442486172 in words is "four hundred forty-two million, four hundred eighty-six thousand, one hundred seventy-two".