8248639 has 4 divisors (see below), whose sum is σ = 9427024. Its totient is φ = 7070256.

The previous prime is 8248637. The next prime is 8248649. The reversal of 8248639 is 9368428.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 8248639 - 2¹ = 8248637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8248637) 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, 589182 + ... + 589195.

It is an arithmetic number, because the mean of its divisors is an integer number (2356756).

Almost surely, 2^8248639 is an apocalyptic number.

8248639 is a deficient number, since it is larger than the sum of its proper divisors (1178385).

8248639 is a wasteful number, since it uses less digits than its factorization.

8248639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178384.

The product of its digits is 82944, while the sum is 40.

The square root of 8248639 is about 2872.0443938073. The cubic root of 8248639 is about 202.0508890510.

The spelling of 8248639 in words is "eight million, two hundred forty-eight thousand, six hundred thirty-nine".