4002721964 has 12 divisors (see below), whose sum is σ = 7005212088. Its totient is φ = 2001232800.

The previous prime is 4002721949. The next prime is 4002721967. The reversal of 4002721964 is 4691272004.

4002721964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (4002721967) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89099 + ... + 126269.

It is an arithmetic number, because the mean of its divisors is an integer number (583767674).

Almost surely, 2^4002721964 is an apocalyptic number.

It is an amenable number.

4002721964 is a deficient number, since it is larger than the sum of its proper divisors (3002490124).

4002721964 is a wasteful number, since it uses less digits than its factorization.

4002721964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64096 (or 64094 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 4002721964 is about 63267.0685586111. The cubic root of 4002721964 is about 1587.7610410339.

Adding to 4002721964 its reverse (4691272004), we get a palindrome (8693993968).

The spelling of 4002721964 in words is "four billion, two million, seven hundred twenty-one thousand, nine hundred sixty-four".