4991399039 has 8 divisors (see below), whose sum is σ = 5477770368. Its totient is φ = 4510462360.

The previous prime is 4991399033. The next prime is 4991399041. The reversal of 4991399039 is 9309931994.

It is a happy number.

4991399039 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4991399039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4991399033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1356737 + ... + 1360410.

It is an arithmetic number, because the mean of its divisors is an integer number (684721296).

Almost surely, 2^4991399039 is an apocalyptic number.

4991399039 is a deficient number, since it is larger than the sum of its proper divisors (486371329).

4991399039 is a wasteful number, since it uses less digits than its factorization.

4991399039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2717325.

The product of its (nonzero) digits is 2125764, while the sum is 56.

The square root of 4991399039 is about 70649.8339630038. The cubic root of 4991399039 is about 1708.9948881632.

The spelling of 4991399039 in words is "four billion, nine hundred ninety-one million, three hundred ninety-nine thousand, thirty-nine".