3993980 has 36 divisors (see below), whose sum is σ = 8922648. Its totient is φ = 1501440.

The previous prime is 3993959. The next prime is 3993991. The reversal of 3993980 is 893993.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a zygodrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5435 + ... + 6125.

Almost surely, 2^3993980 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 3993980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4461324).

3993980 is an abundant number, since it is smaller than the sum of its proper divisors (4928668).

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

3993980 is a wasteful number, since it uses less digits than its factorization.

3993980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 715 counting only the distinct ones).

The product of its (nonzero) digits is 52488, while the sum is 41.

The square root of 3993980 is about 1998.4944333172. The cubic root of 3993980 is about 158.6604305939.

The spelling of 3993980 in words is "three million, nine hundred ninety-three thousand, nine hundred eighty".