4281479721 has 16 divisors (see below), whose sum is σ = 6344049600. Its totient is φ = 2853817344.

The previous prime is 4281479707. The next prime is 4281479731. The reversal of 4281479721 is 1279741824.

It is not a de Polignac number, because 4281479721 - 2⁵ = 4281479689 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (4281479731) 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 15 ways as a sum of consecutive naturals, for example, 204310 + ... + 224288.

It is an arithmetic number, because the mean of its divisors is an integer number (396503100).

Almost surely, 2^4281479721 is an apocalyptic number.

It is an amenable number.

4281479721 is a deficient number, since it is larger than the sum of its proper divisors (2062569879).

4281479721 is a wasteful number, since it uses less digits than its factorization.

4281479721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27925 (or 27919 counting only the distinct ones).

The product of its digits is 225792, while the sum is 45.

The square root of 4281479721 is about 65433.0170556119. The cubic root of 4281479721 is about 1623.7953639007.

The spelling of 4281479721 in words is "four billion, two hundred eighty-one million, four hundred seventy-nine thousand, seven hundred twenty-one".