442698239 has 2 divisors, whose sum is σ = 442698240. Its totient is φ = 442698238.

The previous prime is 442698211. The next prime is 442698247. The reversal of 442698239 is 932896244.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 442698239 - 2¹² = 442694143 is a prime.

It is a super-2 number, since 2×442698239² = 391963461627402242, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 442698193 and 442698202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442698209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221349119 + 221349120.

It is an arithmetic number, because the mean of its divisors is an integer number (221349120).

Almost surely, 2^442698239 is an apocalyptic number.

442698239 is a deficient number, since it is larger than the sum of its proper divisors (1).

442698239 is an equidigital number, since it uses as much as digits as its factorization.

442698239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 746496, while the sum is 47.

The square root of 442698239 is about 21040.3954097826. The cubic root of 442698239 is about 762.1420634451.

The spelling of 442698239 in words is "four hundred forty-two million, six hundred ninety-eight thousand, two hundred thirty-nine".