3993860 has 24 divisors (see below), whose sum is σ = 9032856. Its totient is φ = 1474560.

The previous prime is 3993859. The next prime is 3993889. The reversal of 3993860 is 683993.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 276676 + 3717184 = 526^2 + 1928^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7421 + ... + 7940.

It is an arithmetic number, because the mean of its divisors is an integer number (376369).

Almost surely, 2^3993860 is an apocalyptic number.

It is an amenable number.

3993860 is an abundant number, since it is smaller than the sum of its proper divisors (5038996).

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

3993860 is a wasteful number, since it uses less digits than its factorization.

3993860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15383 (or 15381 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 3993860 is about 1998.4644104912. The cubic root of 3993860 is about 158.6588415823.

The spelling of 3993860 in words is "three million, nine hundred ninety-three thousand, eight hundred sixty".