4391249 has 2 divisors, whose sum is σ = 4391250. Its totient is φ = 4391248.

The previous prime is 4391227. The next prime is 4391263. The reversal of 4391249 is 9421934.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4231249 + 160000 = 2057^2 + 400^2 .

It is a cyclic number.

It is not a de Polignac number, because 4391249 - 2¹² = 4387153 is a prime.

It is a Chen prime.

It is a nialpdrome in base 13.

It is not a weakly prime, because it can be changed into another prime (4391449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2195624 + 2195625.

It is an arithmetic number, because the mean of its divisors is an integer number (2195625).

Almost surely, 2^4391249 is an apocalyptic number.

It is an amenable number.

4391249 is a deficient number, since it is larger than the sum of its proper divisors (1).

4391249 is an equidigital number, since it uses as much as digits as its factorization.

4391249 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 32.

The square root of 4391249 is about 2095.5307203666. The cubic root of 4391249 is about 163.7555474686.

The spelling of 4391249 in words is "four million, three hundred ninety-one thousand, two hundred forty-nine".