3979668920 has 64 divisors (see below), whose sum is σ = 9182147040. Its totient is φ = 1551513600.

The previous prime is 3979668919. The next prime is 3979668971. The reversal of 3979668920 is 298669793.

It is a self number, because there is not a number n which added to its sum of digits gives 3979668920.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 893900 + ... + 898340.

Almost surely, 2^3979668920 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 3979668920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4591073520).

3979668920 is an abundant number, since it is smaller than the sum of its proper divisors (5202478120).

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

3979668920 is a wasteful number, since it uses less digits than its factorization.

3979668920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5016 (or 5012 counting only the distinct ones).

The product of its (nonzero) digits is 8817984, while the sum is 59.

The square root of 3979668920 is about 63084.6171423747. The cubic root of 3979668920 is about 1584.7070175989.

The spelling of 3979668920 in words is "three billion, nine hundred seventy-nine million, six hundred sixty-eight thousand, nine hundred twenty".