6558940339 has 4 divisors (see below), whose sum is σ = 7495931824. Its totient is φ = 5621948856.

The previous prime is 6558940253. The next prime is 6558940343. The reversal of 6558940339 is 9330498556.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6558940339 - 2¹³ = 6558932147 is a prime.

It is a super-2 number, since 2×6558940339² = 86039396741122869842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6558940639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 468495732 + ... + 468495745.

It is an arithmetic number, because the mean of its divisors is an integer number (1873982956).

Almost surely, 2^6558940339 is an apocalyptic number.

6558940339 is a deficient number, since it is larger than the sum of its proper divisors (936991485).

6558940339 is an equidigital number, since it uses as much as digits as its factorization.

6558940339 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936991484.

The product of its (nonzero) digits is 3499200, while the sum is 52.

The square root of 6558940339 is about 80987.2850452465. The cubic root of 6558940339 is about 1871.8795232379.

The spelling of 6558940339 in words is "six billion, five hundred fifty-eight million, nine hundred forty thousand, three hundred thirty-nine".