442376239 has 2 divisors, whose sum is σ = 442376240. Its totient is φ = 442376238.

The previous prime is 442376219. The next prime is 442376243. The reversal of 442376239 is 932673244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442376239 - 2¹⁵ = 442343471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442376219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221188119 + 221188120.

It is an arithmetic number, because the mean of its divisors is an integer number (221188120).

Almost surely, 2^442376239 is an apocalyptic number.

442376239 is a deficient number, since it is larger than the sum of its proper divisors (1).

442376239 is an equidigital number, since it uses as much as digits as its factorization.

442376239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 40.

The square root of 442376239 is about 21032.7420704006. The cubic root of 442376239 is about 761.9572353108.

The spelling of 442376239 in words is "four hundred forty-two million, three hundred seventy-six thousand, two hundred thirty-nine".