442338239 has 6 divisors (see below), whose sum is σ = 514556784. Its totient is φ = 379147020.

The previous prime is 442338223. The next prime is 442338251. The reversal of 442338239 is 932833244.

It is not a de Polignac number, because 442338239 - 2⁴ = 442338223 is a prime.

It is a super-2 number, since 2×442338239² = 391326235363242242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442338209) 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 5 ways as a sum of consecutive naturals, for example, 4513607 + ... + 4513704.

It is an arithmetic number, because the mean of its divisors is an integer number (85759464).

Almost surely, 2^442338239 is an apocalyptic number.

442338239 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

442338239 is a deficient number, since it is larger than the sum of its proper divisors (72218545).

442338239 is an equidigital number, since it uses as much as digits as its factorization.

442338239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9027325 (or 9027318 counting only the distinct ones).

The product of its digits is 124416, while the sum is 38.

The square root of 442338239 is about 21031.8386975557. The cubic root of 442338239 is about 761.9354173788.

The spelling of 442338239 in words is "four hundred forty-two million, three hundred thirty-eight thousand, two hundred thirty-nine".