4799681721 has 24 divisors (see below), whose sum is σ = 7077844800. Its totient is φ = 3133485600.

The previous prime is 4799681707. The next prime is 4799681729. The reversal of 4799681721 is 1271869974.

4799681721 is a `hidden beast` number, since 479 + 96 + 81 + 7 + 2 + 1 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-4799681721 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4799681729) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 70006 + ... + 120416.

It is an arithmetic number, because the mean of its divisors is an integer number (294910200).

Almost surely, 2^4799681721 is an apocalyptic number.

It is an amenable number.

4799681721 is a deficient number, since it is larger than the sum of its proper divisors (2278163079).

4799681721 is a wasteful number, since it uses less digits than its factorization.

4799681721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50637 (or 50634 counting only the distinct ones).

The product of its digits is 1524096, while the sum is 54.

The square root of 4799681721 is about 69279.7352838476. The cubic root of 4799681721 is about 1686.8280454870.

It can be divided in two parts, 479 and 9681721, that added together give a triangular number (9682200 = T₄₄₀₀).

The spelling of 4799681721 in words is "four billion, seven hundred ninety-nine million, six hundred eighty-one thousand, seven hundred twenty-one".