6609940239 has 32 divisors (see below), whose sum is σ = 10145286144. Its totient is φ = 3749840640.

The previous prime is 6609940223. The next prime is 6609940273. The reversal of 6609940239 is 9320499066.

It is not a de Polignac number, because 6609940239 - 2⁴ = 6609940223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6609940219) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1727082 + ... + 1730904.

It is an arithmetic number, because the mean of its divisors is an integer number (317040192).

Almost surely, 2^6609940239 is an apocalyptic number.

6609940239 is a deficient number, since it is larger than the sum of its proper divisors (3535345905).

6609940239 is a wasteful number, since it uses less digits than its factorization.

6609940239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4407.

The product of its (nonzero) digits is 629856, while the sum is 48.

The square root of 6609940239 is about 81301.5389706739. The cubic root of 6609940239 is about 1876.7186838169.

The spelling of 6609940239 in words is "six billion, six hundred nine million, nine hundred forty thousand, two hundred thirty-nine".