2444664442 has 64 divisors (see below), whose sum is σ = 4199827968. Its totient is φ = 1057536000.

The previous prime is 2444664421. The next prime is 2444664451.

It is a happy number.

2444664442 is nontrivially palindromic in base 10.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 2444664395 and 2444664404.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9020767 + ... + 9021037.

It is an arithmetic number, because the mean of its divisors is an integer number (65622312).

Almost surely, 2^2444664442 is an apocalyptic number.

2444664442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

2444664442 is a deficient number, since it is larger than the sum of its proper divisors (1755163526).

2444664442 is a wasteful number, since it uses less digits than its factorization.

2444664442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 535.

The product of its digits is 589824, while the sum is 40.

The square root of 2444664442 is about 49443.5480320739. The cubic root of 2444664442 is about 1347.1204176130.

It can be divided in two parts, 24446 and 64442, that added together give a palindrome (88888).

The spelling of 2444664442 in words is "two billion, four hundred forty-four million, six hundred sixty-four thousand, four hundred forty-two".