6649449059 has 8 divisors (see below), whose sum is σ = 7390811952. Its totient is φ = 5930897440.

The previous prime is 6649449031. The next prime is 6649449061. The reversal of 6649449059 is 9509449466.

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

It is a cyclic number.

It is not a de Polignac number, because 6649449059 - 2²⁰ = 6648400483 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6649448995 and 6649449013.

It is not an unprimeable number, because it can be changed into a prime (6649449089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5702204 + ... + 5703369.

It is an arithmetic number, because the mean of its divisors is an integer number (923851494).

Almost surely, 2^6649449059 is an apocalyptic number.

6649449059 is a deficient number, since it is larger than the sum of its proper divisors (741362893).

6649449059 is a wasteful number, since it uses less digits than its factorization.

6649449059 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11405637.

The product of its (nonzero) digits is 8398080, while the sum is 56.

The square root of 6649449059 is about 81544.1540455231. The cubic root of 6649449059 is about 1880.4504220109.

The spelling of 6649449059 in words is "six billion, six hundred forty-nine million, four hundred forty-nine thousand, fifty-nine".