442304322991 has 2 divisors, whose sum is σ = 442304322992. Its totient is φ = 442304322990.

The previous prime is 442304322949. The next prime is 442304323039. The reversal of 442304322991 is 199223403244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442304322991 - 2²⁵ = 442270768559 is a prime.

It is a super-2 number, since 2×442304322991² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442304322091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221152161495 + 221152161496.

It is an arithmetic number, because the mean of its divisors is an integer number (221152161496).

Almost surely, 2^442304322991 is an apocalyptic number.

442304322991 is a deficient number, since it is larger than the sum of its proper divisors (1).

442304322991 is an equidigital number, since it uses as much as digits as its factorization.

442304322991 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 43.

The spelling of 442304322991 in words is "four hundred forty-two billion, three hundred four million, three hundred twenty-two thousand, nine hundred ninety-one".