442244637 has 16 divisors (see below), whose sum is σ = 670415680. Its totient is φ = 287972496.

The previous prime is 442244633. The next prime is 442244657. The reversal of 442244637 is 736442244.

It is not a de Polignac number, because 442244637 - 2² = 442244633 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442244633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 189298 + ... + 191619.

It is an arithmetic number, because the mean of its divisors is an integer number (41900980).

Almost surely, 2^442244637 is an apocalyptic number.

It is an amenable number.

442244637 is a deficient number, since it is larger than the sum of its proper divisors (228171043).

442244637 is a wasteful number, since it uses less digits than its factorization.

442244637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 380969 (or 380963 counting only the distinct ones).

The product of its digits is 129024, while the sum is 36.

The square root of 442244637 is about 21029.6133345338. The cubic root of 442244637 is about 761.8816698890.

The spelling of 442244637 in words is "four hundred forty-two million, two hundred forty-four thousand, six hundred thirty-seven".