4021079688 has 192 divisors, whose sum is σ = 11524032000. Its totient is φ = 1265080320.

The previous prime is 4021079677. The next prime is 4021079693. The reversal of 4021079688 is 8869701204.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 26987038 + ... + 26987186.

It is an arithmetic number, because the mean of its divisors is an integer number (60021000).

Almost surely, 2^4021079688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4021079688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5762016000).

4021079688 is an abundant number, since it is smaller than the sum of its proper divisors (7502952312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

4021079688 is a wasteful number, since it uses less digits than its factorization.

4021079688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412 (or 405 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 45.

The square root of 4021079688 is about 63411.9837885553. The cubic root of 4021079688 is about 1590.1846611207.

The spelling of 4021079688 in words is "four billion, twenty-one million, seventy-nine thousand, six hundred eighty-eight".