442146663 has 36 divisors (see below), whose sum is σ = 770369808. Its totient is φ = 239345280.

The previous prime is 442146631. The next prime is 442146671. The reversal of 442146663 is 366641244.

It is not a de Polignac number, because 442146663 - 2⁵ = 442146631 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442146613) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 13023 + ... + 32463.

Almost surely, 2^442146663 is an apocalyptic number.

442146663 is a deficient number, since it is larger than the sum of its proper divisors (328223145).

442146663 is a wasteful number, since it uses less digits than its factorization.

442146663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19492 (or 19470 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 442146663 is about 21027.2837760848. The cubic root of 442146663 is about 761.8254038156.

The spelling of 442146663 in words is "four hundred forty-two million, one hundred forty-six thousand, six hundred sixty-three".