64442444 has 48 divisors (see below), whose sum is σ = 131707296. Its totient is φ = 27264000.

The previous prime is 64442401. The next prime is 64442453. The reversal of 64442444 is 44424446.

64442444 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64442444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75122 + ... + 75974.

It is an arithmetic number, because the mean of its divisors is an integer number (2743902).

Almost surely, 2^64442444 is an apocalyptic number.

It is an amenable number.

64442444 is an abundant number, since it is smaller than the sum of its proper divisors (67264852).

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

64442444 is a wasteful number, since it uses less digits than its factorization.

64442444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986 (or 984 counting only the distinct ones).

The product of its digits is 49152, while the sum is 32.

The square root of 64442444 is about 8027.6051223263. The cubic root of 64442444 is about 400.9196423578.

It can be divided in two parts, 6444 and 2444, that added together give a palindrome (8888).

The spelling of 64442444 in words is "sixty-four million, four hundred forty-two thousand, four hundred forty-four".