6408482809 has 15 divisors (see below), whose sum is σ = 6833678187. Its totient is φ = 6009738816.

The previous prime is 6408482803. The next prime is 6408482831. The reversal of 6408482809 is 9082848046.

The square root of 6408482809 is 80053.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 7 ways, for example, as 1761061225 + 4647421584 = 41965^2 + 68172^2 .

It is not a de Polignac number, because 6408482809 - 2⁵ = 6408482777 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6408482803) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 23135179 + ... + 23135455.

Almost surely, 2^6408482809 is an apocalyptic number.

6408482809 is the 80053-rd square number.

6408482809 is the 40027-th centered octagonal number.

It is an amenable number.

6408482809 is a deficient number, since it is larger than the sum of its proper divisors (425195378).

6408482809 is an frugal number, since it uses more digits than its factorization.

6408482809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 622 (or 294 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 49.

The cubic root of 6408482809 is about 1857.4554569558.

Multiplying 6408482809 by its sum of digits (49), we get a square (314015657641 = 560371²).

The spelling of 6408482809 in words is "six billion, four hundred eight million, four hundred eighty-two thousand, eight hundred nine".