3918860 has 48 divisors (see below), whose sum is σ = 9192960. Its totient is φ = 1391040.

The previous prime is 3918853. The next prime is 3918869. The reversal of 3918860 is 688193.

3918860 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 3918860.

It is not an unprimeable number, because it can be changed into a prime (3918869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10151 + ... + 10529.

It is an arithmetic number, because the mean of its divisors is an integer number (191520).

Almost surely, 2^3918860 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 3918860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4596480).

3918860 is an abundant number, since it is smaller than the sum of its proper divisors (5274100).

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

3918860 is a wasteful number, since it uses less digits than its factorization.

3918860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446 (or 444 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 3918860 is about 1979.6110729131. The cubic root of 3918860 is about 157.6594169875.

The spelling of 3918860 in words is "three million, nine hundred eighteen thousand, eight hundred sixty".