4644444464 has 80 divisors (see below), whose sum is σ = 10268342784. Its totient is φ = 2014425600.

The previous prime is 4644444463. The next prime is 4644444503.

4644444464 is nontrivially palindromic in base 10.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (4644444463) by changing a digit.

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, 2035004 + ... + 2037284.

Almost surely, 2^4644444464 is an apocalyptic number.

4644444464 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4644444464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5134171392).

4644444464 is an abundant number, since it is smaller than the sum of its proper divisors (5623898320).

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

4644444464 is a wasteful number, since it uses less digits than its factorization.

4644444464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826 (or 2820 counting only the distinct ones).

The product of its digits is 2359296, while the sum is 44.

The square root of 4644444464 is about 68150.1611443436. The cubic root of 4644444464 is about 1668.4425538538.

The spelling of 4644444464 in words is "four billion, six hundred forty-four million, four hundred forty-four thousand, four hundred sixty-four".