442844331 has 16 divisors (see below), whose sum is σ = 616366080. Its totient is φ = 282490560.

The previous prime is 442844317. The next prime is 442844351. The reversal of 442844331 is 133448244.

It is not a de Polignac number, because 442844331 - 2¹⁰ = 442843307 is a prime.

It is a super-2 number, since 2×442844331² = 392222202997675122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442844292 and 442844301.

It is not an unprimeable number, because it can be changed into a prime (442844351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18475 + ... + 35028.

It is an arithmetic number, because the mean of its divisors is an integer number (38522880).

Almost surely, 2^442844331 is an apocalyptic number.

442844331 is a deficient number, since it is larger than the sum of its proper divisors (173521749).

442844331 is a wasteful number, since it uses less digits than its factorization.

442844331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53626.

The product of its digits is 36864, while the sum is 33.

The square root of 442844331 is about 21043.8668262275. The cubic root of 442844331 is about 762.2258907590.

The spelling of 442844331 in words is "four hundred forty-two million, eight hundred forty-four thousand, three hundred thirty-one".