2668985439 has 4 divisors (see below), whose sum is σ = 3558647256. Its totient is φ = 1779323624.

The previous prime is 2668985437. The next prime is 2668985471. The reversal of 2668985439 is 9345898662.

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 2668985439 - 2¹ = 2668985437 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668985437) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 444830904 + ... + 444830909.

It is an arithmetic number, because the mean of its divisors is an integer number (889661814).

Almost surely, 2^2668985439 is an apocalyptic number.

2668985439 is a deficient number, since it is larger than the sum of its proper divisors (889661817).

2668985439 is an equidigital number, since it uses as much as digits as its factorization.

2668985439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 889661816.

The product of its digits is 22394880, while the sum is 60.

The square root of 2668985439 is about 51662.2244875305. The cubic root of 2668985439 is about 1387.1243689925.

The spelling of 2668985439 in words is "two billion, six hundred sixty-eight million, nine hundred eighty-five thousand, four hundred thirty-nine".