442359978 has 8 divisors (see below), whose sum is σ = 884719968. Its totient is φ = 147453324.

The previous prime is 442359977. The next prime is 442359979. The reversal of 442359978 is 879953244.

It is an interprime number because it is at equal distance from previous prime (442359977) and next prime (442359979).

It is a sphenic number, since it is the product of 3 distinct primes.

442359978 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 442359978.

It is not an unprimeable number, because it can be changed into a prime (442359977) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36863326 + ... + 36863337.

It is an arithmetic number, because the mean of its divisors is an integer number (110589996).

Almost surely, 2^442359978 is an apocalyptic number.

442359978 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

442359978 is a wasteful number, since it uses less digits than its factorization.

442359978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73726668.

The product of its digits is 2177280, while the sum is 51.

The square root of 442359978 is about 21032.3555028913. The cubic root of 442359978 is about 761.9478991113.

The spelling of 442359978 in words is "four hundred forty-two million, three hundred fifty-nine thousand, nine hundred seventy-eight".