8389249 has 4 divisors (see below), whose sum is σ = 9151920. Its totient is φ = 7626580.

The previous prime is 8389237. The next prime is 8389261. The reversal of 8389249 is 9429838.

It is a happy number.

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 (8389237) and next prime (8389261).

It is a cyclic number.

It is not a de Polignac number, because 8389249 - 2¹⁷ = 8258177 is a prime.

It is a d-powerful number, because it can be written as 8 + 3³ + 8³ + 9 + 2²³ + 4 + 9² .

It is a Duffinian number.

8389249 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (8389219) 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, 381319 + ... + 381340.

It is an arithmetic number, because the mean of its divisors is an integer number (2287980).

Almost surely, 2^8389249 is an apocalyptic number.

It is an amenable number.

8389249 is a deficient number, since it is larger than the sum of its proper divisors (762671).

8389249 is a wasteful number, since it uses less digits than its factorization.

8389249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762670.

The product of its digits is 124416, while the sum is 43.

The square root of 8389249 is about 2896.4200316943. The cubic root of 8389249 is about 203.1925099152.

The spelling of 8389249 in words is "eight million, three hundred eighty-nine thousand, two hundred forty-nine".