6509899329 has 4 divisors (see below), whose sum is σ = 8679865776. Its totient is φ = 4339932884.

The previous prime is 6509899327. The next prime is 6509899351. The reversal of 6509899329 is 9239989056.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6509899329 - 2¹ = 6509899327 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6509899327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1084983219 + ... + 1084983224.

It is an arithmetic number, because the mean of its divisors is an integer number (2169966444).

Almost surely, 2^6509899329 is an apocalyptic number.

It is an amenable number.

6509899329 is a deficient number, since it is larger than the sum of its proper divisors (2169966447).

6509899329 is a wasteful number, since it uses less digits than its factorization.

6509899329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2169966446.

The product of its (nonzero) digits is 9447840, while the sum is 60.

The square root of 6509899329 is about 80683.9471580314. The cubic root of 6509899329 is about 1867.2025172332.

The spelling of 6509899329 in words is "six billion, five hundred nine million, eight hundred ninety-nine thousand, three hundred twenty-nine".