442405438629 has 24 divisors (see below), whose sum is σ = 748559854368. Its totient is φ = 229821006240.

The previous prime is 442405438613. The next prime is 442405438681. The reversal of 442405438629 is 926834504244.

It is not a de Polignac number, because 442405438629 - 2⁴ = 442405438613 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442405438609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 136796602 + ... + 136799835.

It is an arithmetic number, because the mean of its divisors is an integer number (31189993932).

Almost surely, 2^442405438629 is an apocalyptic number.

442405438629 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

442405438629 is a deficient number, since it is larger than the sum of its proper divisors (306154415739).

442405438629 is a wasteful number, since it uses less digits than its factorization.

442405438629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273596465 (or 273596458 counting only the distinct ones).

The product of its (nonzero) digits is 6635520, while the sum is 51.

The spelling of 442405438629 in words is "four hundred forty-two billion, four hundred five million, four hundred thirty-eight thousand, six hundred twenty-nine".