442023983 has 2 divisors, whose sum is σ = 442023984. Its totient is φ = 442023982.

The previous prime is 442023973. The next prime is 442024007. The reversal of 442023983 is 389320244.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442023983 - 2⁸ = 442023727 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442023943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221011991 + 221011992.

It is an arithmetic number, because the mean of its divisors is an integer number (221011992).

Almost surely, 2^442023983 is an apocalyptic number.

442023983 is a deficient number, since it is larger than the sum of its proper divisors (1).

442023983 is an equidigital number, since it uses as much as digits as its factorization.

442023983 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 442023983 is about 21024.3664113809. The cubic root of 442023983 is about 761.7549374646.

The spelling of 442023983 in words is "four hundred forty-two million, twenty-three thousand, nine hundred eighty-three".