8424249 has 4 divisors (see below), whose sum is σ = 11232336. Its totient is φ = 5616164.

The previous prime is 8424211. The next prime is 8424287. The reversal of 8424249 is 9424248.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (8424211) and next prime (8424287).

It is a cyclic number.

It is not a de Polignac number, because 8424249 - 2⁷ = 8424121 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 4² + 2¹¹ + 4² + 2²³ + 4³ + 9³ .

It is not an unprimeable number, because it can be changed into a prime (8424209) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1404039 + ... + 1404044.

It is an arithmetic number, because the mean of its divisors is an integer number (2808084).

Almost surely, 2^8424249 is an apocalyptic number.

It is an amenable number.

8424249 is a deficient number, since it is larger than the sum of its proper divisors (2808087).

8424249 is a wasteful number, since it uses less digits than its factorization.

8424249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2808086.

The product of its digits is 18432, while the sum is 33.

The square root of 8424249 is about 2902.4556844162. The cubic root of 8424249 is about 203.4746913371.

Subtracting 8424249 from its reverse (9424248), we obtain a palindrome (999999).

The spelling of 8424249 in words is "eight million, four hundred twenty-four thousand, two hundred forty-nine".