3981080 has 16 divisors (see below), whose sum is σ = 8957520. Its totient is φ = 1592416.

The previous prime is 3981071. The next prime is 3981097. The reversal of 3981080 is 801893.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 49724 + ... + 49803.

It is an arithmetic number, because the mean of its divisors is an integer number (559845).

Almost surely, 2^3981080 is an apocalyptic number.

It is an amenable number.

3981080 is an abundant number, since it is smaller than the sum of its proper divisors (4976440).

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

3981080 is a wasteful number, since it uses less digits than its factorization.

3981080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99538 (or 99534 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 3981080 is about 1995.2643935078. The cubic root of 3981080 is about 158.4894293156.

The spelling of 3981080 in words is "three million, nine hundred eighty-one thousand, eighty".