6439449346 has 16 divisors (see below), whose sum is σ = 11157121440. Its totient is φ = 2754844480.

The previous prime is 6439449319. The next prime is 6439449361.

6439449346 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 6439449293 and 6439449302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8608516 + ... + 8609263.

It is an arithmetic number, because the mean of its divisors is an integer number (697320090).

Almost surely, 2^6439449346 is an apocalyptic number.

6439449346 is a deficient number, since it is larger than the sum of its proper divisors (4717672094).

6439449346 is a wasteful number, since it uses less digits than its factorization.

6439449346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17217809.

The product of its digits is 6718464, while the sum is 52.

The square root of 6439449346 is about 80246.1796349209. The cubic root of 6439449346 is about 1860.4424647829.

The spelling of 6439449346 in words is "six billion, four hundred thirty-nine million, four hundred forty-nine thousand, three hundred forty-six".