6440330446 has 8 divisors (see below), whose sum is σ = 10538722584. Its totient is φ = 2927422920.

The previous prime is 6440330443. The next prime is 6440330503.

6440330446 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6440330443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 146371125 + ... + 146371168.

It is an arithmetic number, because the mean of its divisors is an integer number (1317340323).

Almost surely, 2^6440330446 is an apocalyptic number.

6440330446 is a deficient number, since it is larger than the sum of its proper divisors (4098392138).

6440330446 is a wasteful number, since it uses less digits than its factorization.

6440330446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 292742306.

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 6440330446 is about 80251.6694281184. The cubic root of 6440330446 is about 1860.5273147449.

It can be divided in two parts, 64403 and 30446, that added together give a palindrome (94849).

The spelling of 6440330446 in words is "six billion, four hundred forty million, three hundred thirty thousand, four hundred forty-six".