3979993920 has 112 divisors (see below), whose sum is σ = 14441716608. Its totient is φ = 909711360.

The previous prime is 3979993903. The next prime is 3979993949. The reversal of 3979993920 is 293999793.

3979993920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 289411 + ... + 302850.

Almost surely, 2^3979993920 is an apocalyptic number.

3979993920 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

3979993920 is an abundant number, since it is smaller than the sum of its proper divisors (10461722688).

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

3979993920 is a wasteful number, since it uses less digits than its factorization.

3979993920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 592288 (or 592278 counting only the distinct ones).

The product of its (nonzero) digits is 7440174, while the sum is 60.

The square root of 3979993920 is about 63087.1929950921. The cubic root of 3979993920 is about 1584.7501548357.

The spelling of 3979993920 in words is "three billion, nine hundred seventy-nine million, nine hundred ninety-three thousand, nine hundred twenty".