3947120 has 20 divisors (see below), whose sum is σ = 9177240. Its totient is φ = 1578816.

The previous prime is 3947113. The next prime is 3947131. The reversal of 3947120 is 217493.

3947120 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 3947120.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 24590 + ... + 24749.

It is an arithmetic number, because the mean of its divisors is an integer number (458862).

Almost surely, 2^3947120 is an apocalyptic number.

It is an amenable number.

3947120 is an abundant number, since it is smaller than the sum of its proper divisors (5230120).

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

3947120 is a wasteful number, since it uses less digits than its factorization.

3947120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49352 (or 49346 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 26.

The square root of 3947120 is about 1986.7360166867. The cubic root of 3947120 is about 158.0374850974.

The spelling of 3947120 in words is "three million, nine hundred forty-seven thousand, one hundred twenty".