442022939 has 2 divisors, whose sum is σ = 442022940. Its totient is φ = 442022938.

The previous prime is 442022923. The next prime is 442022963. The reversal of 442022939 is 939220244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442022939 - 2⁴ = 442022923 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442022899 and 442022908.

It is not a weakly prime, because it can be changed into another prime (442021939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221011469 + 221011470.

It is an arithmetic number, because the mean of its divisors is an integer number (221011470).

Almost surely, 2^442022939 is an apocalyptic number.

442022939 is a deficient number, since it is larger than the sum of its proper divisors (1).

442022939 is an equidigital number, since it uses as much as digits as its factorization.

442022939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 35.

The square root of 442022939 is about 21024.3415830318. The cubic root of 442022939 is about 761.7543377439.

The spelling of 442022939 in words is "four hundred forty-two million, twenty-two thousand, nine hundred thirty-nine".