3947085 has 24 divisors (see below), whose sum is σ = 6888960. Its totient is φ = 2090592.

The previous prime is 3947071. The next prime is 3947087. The reversal of 3947085 is 5807493.

It is not a de Polignac number, because 3947085 - 2⁸ = 3946829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947087) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10572 + ... + 10938.

It is an arithmetic number, because the mean of its divisors is an integer number (287040).

Almost surely, 2^3947085 is an apocalyptic number.

It is an amenable number.

3947085 is a deficient number, since it is larger than the sum of its proper divisors (2941875).

3947085 is a wasteful number, since it uses less digits than its factorization.

3947085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 617 (or 614 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 3947085 is about 1986.7272082498. The cubic root of 3947085 is about 158.0370179781.

The spelling of 3947085 in words is "three million, nine hundred forty-seven thousand, eighty-five".