3947247 has 12 divisors (see below), whose sum is σ = 6037200. Its totient is φ = 2476608.

The previous prime is 3947233. The next prime is 3947297. The reversal of 3947247 is 7427493.

It is not a de Polignac number, because 3947247 - 2⁸ = 3946991 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3947227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12747 + ... + 13052.

It is an arithmetic number, because the mean of its divisors is an integer number (503100).

Almost surely, 2^3947247 is an apocalyptic number.

3947247 is a deficient number, since it is larger than the sum of its proper divisors (2089953).

3947247 is a wasteful number, since it uses less digits than its factorization.

3947247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25822 (or 25819 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 3947247 is about 1986.7679784011. The cubic root of 3947247 is about 158.0391800501.

The spelling of 3947247 in words is "three million, nine hundred forty-seven thousand, two hundred forty-seven".