4999721709 has 16 divisors (see below), whose sum is σ = 7059909888. Its totient is φ = 3136422912.

The previous prime is 4999721707. The next prime is 4999721737. The reversal of 4999721709 is 9071279994.

It is not a de Polignac number, because 4999721709 - 2¹ = 4999721707 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4999721707) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 377884 + ... + 390890.

It is an arithmetic number, because the mean of its divisors is an integer number (441244368).

Almost surely, 2^4999721709 is an apocalyptic number.

It is an amenable number.

4999721709 is a deficient number, since it is larger than the sum of its proper divisors (2060188179).

4999721709 is a wasteful number, since it uses less digits than its factorization.

4999721709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20564.

The product of its (nonzero) digits is 2571912, while the sum is 57.

The square root of 4999721709 is about 70708.7102767403. The cubic root of 4999721709 is about 1709.9442213604.

The spelling of 4999721709 in words is "four billion, nine hundred ninety-nine million, seven hundred twenty-one thousand, seven hundred nine".