442549946 has 16 divisors (see below), whose sum is σ = 693192384. Its totient is φ = 211499904.

The previous prime is 442549927. The next prime is 442549951. The reversal of 442549946 is 649945244.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 442549946.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 83306 + ... + 88458.

It is an arithmetic number, because the mean of its divisors is an integer number (43324524).

Almost surely, 2^442549946 is an apocalyptic number.

442549946 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

442549946 is a deficient number, since it is larger than the sum of its proper divisors (250642438).

442549946 is a wasteful number, since it uses less digits than its factorization.

442549946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7045.

The product of its digits is 1244160, while the sum is 47.

The square root of 442549946 is about 21036.8711076529. The cubic root of 442549946 is about 762.0569543383.

The spelling of 442549946 in words is "four hundred forty-two million, five hundred forty-nine thousand, nine hundred forty-six".