3947141 has 6 divisors (see below), whose sum is σ = 4338726. Its totient is φ = 3588200.

The previous prime is 3947131. The next prime is 3947143. The reversal of 3947141 is 1417493.

3947141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3496900 + 450241 = 1870^2 + 671^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3947141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947143) 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 5 ways as a sum of consecutive naturals, for example, 16190 + ... + 16431.

It is an arithmetic number, because the mean of its divisors is an integer number (723121).

Almost surely, 2^3947141 is an apocalyptic number.

It is an amenable number.

3947141 is a deficient number, since it is larger than the sum of its proper divisors (391585).

3947141 is a wasteful number, since it uses less digits than its factorization.

3947141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32643 (or 32632 counting only the distinct ones).

The product of its digits is 3024, while the sum is 29.

The square root of 3947141 is about 1986.7413017300. The cubic root of 3947141 is about 158.0377653677.

The spelling of 3947141 in words is "three million, nine hundred forty-seven thousand, one hundred forty-one".