442413243949 has 2 divisors, whose sum is σ = 442413243950. Its totient is φ = 442413243948.

The previous prime is 442413243947. The next prime is 442413243967. The reversal of 442413243949 is 949342314244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273484023849 + 168929220100 = 522957^2 + 411010^2 .

It is a cyclic number.

It is not a de Polignac number, because 442413243949 - 2¹ = 442413243947 is a prime.

It is a super-2 number, since 2×442413243949² (a number of 24 digits) contains 22 as substring.

Together with 442413243947, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442413243947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221206621974 + 221206621975.

It is an arithmetic number, because the mean of its divisors is an integer number (221206621975).

Almost surely, 2^442413243949 is an apocalyptic number.

It is an amenable number.

442413243949 is a deficient number, since it is larger than the sum of its proper divisors (1).

442413243949 is an equidigital number, since it uses as much as digits as its factorization.

442413243949 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2985984, while the sum is 49.

The spelling of 442413243949 in words is "four hundred forty-two billion, four hundred thirteen million, two hundred forty-three thousand, nine hundred forty-nine".