3986780 has 24 divisors (see below), whose sum is σ = 9568608. Its totient is φ = 1366848.

The previous prime is 3986771. The next prime is 3986783. The reversal of 3986780 is 876893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3986783) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14099 + ... + 14378.

It is an arithmetic number, because the mean of its divisors is an integer number (398692).

Almost surely, 2^3986780 is an apocalyptic number.

It is an amenable number.

3986780 is an abundant number, since it is smaller than the sum of its proper divisors (5581828).

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

3986780 is a wasteful number, since it uses less digits than its factorization.

3986780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28493 (or 28491 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 3986780 is about 1996.6922647218. The cubic root of 3986780 is about 158.5650335017.

The spelling of 3986780 in words is "three million, nine hundred eighty-six thousand, seven hundred eighty".