8721479723 has 8 divisors (see below), whose sum is σ = 10074008880. Its totient is φ = 7462228480.

The previous prime is 8721479717. The next prime is 8721479737. The reversal of 8721479723 is 3279741278.

It is a happy number.

8721479723 is digitally balanced in base 2, 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 not a de Polignac number, because 8721479723 - 2⁴ = 8721479707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8721479743) 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, 23319278 + ... + 23319651.

It is an arithmetic number, because the mean of its divisors is an integer number (1259251110).

Almost surely, 2^8721479723 is an apocalyptic number.

8721479723 is a deficient number, since it is larger than the sum of its proper divisors (1352529157).

8721479723 is a wasteful number, since it uses less digits than its factorization.

8721479723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46638957.

The product of its digits is 1185408, while the sum is 50.

The square root of 8721479723 is about 93388.8629494974. The cubic root of 8721479723 is about 2058.4013520763.

The spelling of 8721479723 in words is "eight billion, seven hundred twenty-one million, four hundred seventy-nine thousand, seven hundred twenty-three".