442947340 has 48 divisors (see below), whose sum is σ = 1058883840. Its totient is φ = 154066880.

The previous prime is 442947311. The next prime is 442947371. The reversal of 442947340 is 43749244.

It is a self number, because there is not a number n which added to its sum of digits gives 442947340.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38710 + ... + 48829.

It is an arithmetic number, because the mean of its divisors is an integer number (22060080).

Almost surely, 2^442947340 is an apocalyptic number.

It is an amenable number.

442947340 is an abundant number, since it is smaller than the sum of its proper divisors (615936500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442947340 is a wasteful number, since it uses less digits than its factorization.

442947340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87582 (or 87580 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 37.

The square root of 442947340 is about 21046.3141666183. The cubic root of 442947340 is about 762.2849860469.

The spelling of 442947340 in words is "four hundred forty-two million, nine hundred forty-seven thousand, three hundred forty".