4391247 has 16 divisors (see below), whose sum is σ = 6793472. Its totient is φ = 2471040.

The previous prime is 4391227. The next prime is 4391249. The reversal of 4391247 is 7421934.

It is a happy number.

It is not a de Polignac number, because 4391247 - 2²⁰ = 3342671 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4391249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154 + ... + 2967.

It is an arithmetic number, because the mean of its divisors is an integer number (424592).

Almost surely, 2^4391247 is an apocalyptic number.

4391247 is a deficient number, since it is larger than the sum of its proper divisors (2402225).

4391247 is a wasteful number, since it uses less digits than its factorization.

4391247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3198.

The product of its digits is 6048, while the sum is 30.

The square root of 4391247 is about 2095.5302431604. The cubic root of 4391247 is about 163.7555226077.

The spelling of 4391247 in words is "four million, three hundred ninety-one thousand, two hundred forty-seven".