3994660239 has 4 divisors (see below), whose sum is σ = 5326213656. Its totient is φ = 2663106824.

The previous prime is 3994660177. The next prime is 3994660259. The reversal of 3994660239 is 9320664993.

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 3994660239 - 2¹¹ = 3994658191 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3994660191 and 3994660200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3994660259) 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, 665776704 + ... + 665776709.

It is an arithmetic number, because the mean of its divisors is an integer number (1331553414).

Almost surely, 2^3994660239 is an apocalyptic number.

3994660239 is a deficient number, since it is larger than the sum of its proper divisors (1331553417).

3994660239 is a wasteful number, since it uses less digits than its factorization.

3994660239 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1331553416.

The product of its (nonzero) digits is 1889568, while the sum is 51.

The square root of 3994660239 is about 63203.3245881892. The cubic root of 3994660239 is about 1586.6943755655.

The spelling of 3994660239 in words is "three billion, nine hundred ninety-four million, six hundred sixty thousand, two hundred thirty-nine".