4021979064 has 64 divisors (see below), whose sum is σ = 10191744000. Its totient is φ = 1322492160.

The previous prime is 4021979053. The next prime is 4021979141. The reversal of 4021979064 is 4609791204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1021179 + ... + 1025109.

It is an arithmetic number, because the mean of its divisors is an integer number (159246000).

Almost surely, 2^4021979064 is an apocalyptic number.

It is an amenable number.

4021979064 is an abundant number, since it is smaller than the sum of its proper divisors (6169764936).

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

4021979064 is a wasteful number, since it uses less digits than its factorization.

4021979064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4504 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 4021979064 is about 63419.0749222976. The cubic root of 4021979064 is about 1590.3032086600.

The spelling of 4021979064 in words is "four billion, twenty-one million, nine hundred seventy-nine thousand, sixty-four".