442361444 has 24 divisors (see below), whose sum is σ = 913264128. Its totient is φ = 183467520.

The previous prime is 442361441. The next prime is 442361449. The reversal of 442361444 is 444163244.

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 442361444.

It is not an unprimeable number, because it can be changed into a prime (442361441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 253949 + ... + 255684.

It is an arithmetic number, because the mean of its divisors is an integer number (38052672).

Almost surely, 2^442361444 is an apocalyptic number.

It is an amenable number.

442361444 is an abundant number, since it is smaller than the sum of its proper divisors (470902684).

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

442361444 is a wasteful number, since it uses less digits than its factorization.

442361444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509675 (or 509673 counting only the distinct ones).

The product of its digits is 36864, while the sum is 32.

The square root of 442361444 is about 21032.3903539279. The cubic root of 442361444 is about 761.9487408198.

The spelling of 442361444 in words is "four hundred forty-two million, three hundred sixty-one thousand, four hundred forty-four".