442350823669 has 2 divisors, whose sum is σ = 442350823670. Its totient is φ = 442350823668.

The previous prime is 442350823627. The next prime is 442350823693. The reversal of 442350823669 is 966328053244.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 434472131025 + 7878692644 = 659145^2 + 88762^2 .

It is a cyclic number.

It is not a de Polignac number, because 442350823669 - 2⁹ = 442350823157 is a prime.

It is a super-2 number, since 2×442350823669² (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 (442350823619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221175411834 + 221175411835.

It is an arithmetic number, because the mean of its divisors is an integer number (221175411835).

Almost surely, 2^442350823669 is an apocalyptic number.

It is an amenable number.

442350823669 is a deficient number, since it is larger than the sum of its proper divisors (1).

442350823669 is an equidigital number, since it uses as much as digits as its factorization.

442350823669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7464960, while the sum is 52.

The spelling of 442350823669 in words is "four hundred forty-two billion, three hundred fifty million, eight hundred twenty-three thousand, six hundred sixty-nine".