442319 has 2 divisors, whose sum is σ = 442320. Its totient is φ = 442318.

The previous prime is 442291. The next prime is 442327. The reversal of 442319 is 913244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442319 - 2¹² = 438223 is a prime.

It is a super-2 number, since 2×442319² = 391292195522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442294 and 442303.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221159 + 221160.

It is an arithmetic number, because the mean of its divisors is an integer number (221160).

2⁴⁴²³¹⁹ is an apocalyptic number.

442319 is a deficient number, since it is larger than the sum of its proper divisors (1).

442319 is an equidigital number, since it uses as much as digits as its factorization.

442319 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 864, while the sum is 23.

The square root of 442319 is about 665.0706729363. The cubic root of 442319 is about 76.1924370713.

The spelling of 442319 in words is "four hundred forty-two thousand, three hundred nineteen".