442488231 has 16 divisors (see below), whose sum is σ = 656678400. Its totient is φ = 294479064.

The previous prime is 442488229. The next prime is 442488239. The reversal of 442488231 is 132884244.

It is not a de Polignac number, because 442488231 - 2¹ = 442488229 is a prime.

It is a super-2 number, since 2×442488231² = 391591669147018722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442488239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1890 + ... + 29808.

It is an arithmetic number, because the mean of its divisors is an integer number (41042400).

Almost surely, 2^442488231 is an apocalyptic number.

442488231 is a deficient number, since it is larger than the sum of its proper divisors (214190169).

442488231 is a wasteful number, since it uses less digits than its factorization.

442488231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28515 (or 28509 counting only the distinct ones).

The product of its digits is 49152, while the sum is 36.

The square root of 442488231 is about 21035.4042271595. The cubic root of 442488231 is about 762.0215289348.

The spelling of 442488231 in words is "four hundred forty-two million, four hundred eighty-eight thousand, two hundred thirty-one".