442969028 has 12 divisors (see below), whose sum is σ = 776045760. Its totient is φ = 221241672.

The previous prime is 442969001. The next prime is 442969039. The reversal of 442969028 is 820969244.

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 442969028.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56576 + ... + 63927.

It is an arithmetic number, because the mean of its divisors is an integer number (64670480).

Almost surely, 2^442969028 is an apocalyptic number.

It is an amenable number.

442969028 is a deficient number, since it is larger than the sum of its proper divisors (333076732).

442969028 is a wasteful number, since it uses less digits than its factorization.

442969028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 121426 (or 121424 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 442969028 is about 21046.8294049246. The cubic root of 442969028 is about 762.2974270796.

The spelling of 442969028 in words is "four hundred forty-two million, nine hundred sixty-nine thousand, twenty-eight".