4068888021 has 12 divisors (see below), whose sum is σ = 6411581280. Its totient is φ = 2465992680.

The previous prime is 4068887987. The next prime is 4068888079. The reversal of 4068888021 is 1208888604.

It is a happy number.

It is not a de Polignac number, because 4068888021 - 2¹⁴ = 4068871637 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4068888221) 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 11 ways as a sum of consecutive naturals, for example, 20549841 + ... + 20550038.

It is an arithmetic number, because the mean of its divisors is an integer number (534298440).

Almost surely, 2^4068888021 is an apocalyptic number.

It is an amenable number.

4068888021 is a deficient number, since it is larger than the sum of its proper divisors (2342693259).

4068888021 is a wasteful number, since it uses less digits than its factorization.

4068888021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41099896 (or 41099893 counting only the distinct ones).

The product of its (nonzero) digits is 196608, while the sum is 45.

The square root of 4068888021 is about 63787.8359955877. The cubic root of 4068888021 is about 1596.4619766619.

The spelling of 4068888021 in words is "four billion, sixty-eight million, eight hundred eighty-eight thousand, twenty-one".