3947605 has 8 divisors (see below), whose sum is σ = 4943232. Its totient is φ = 3020688.

The previous prime is 3947597. The next prime is 3947623. The reversal of 3947605 is 5067493.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3947605 - 2³ = 3947597 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17049 + ... + 17278.

It is an arithmetic number, because the mean of its divisors is an integer number (617904).

Almost surely, 2^3947605 is an apocalyptic number.

It is an amenable number.

3947605 is a deficient number, since it is larger than the sum of its proper divisors (995627).

3947605 is a wasteful number, since it uses less digits than its factorization.

3947605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34355.

The product of its (nonzero) digits is 22680, while the sum is 34.

The square root of 3947605 is about 1986.8580724350. The cubic root of 3947605 is about 158.0439577527.

The spelling of 3947605 in words is "three million, nine hundred forty-seven thousand, six hundred five".