8223639 has 8 divisors (see below), whose sum is σ = 11171952. Its totient is φ = 5378880.

The previous prime is 8223601. The next prime is 8223653. The reversal of 8223639 is 9363228.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8223639 - 2¹⁶ = 8158103 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8223659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25702 + ... + 26019.

It is an arithmetic number, because the mean of its divisors is an integer number (1396494).

Almost surely, 2^8223639 is an apocalyptic number.

8223639 is a deficient number, since it is larger than the sum of its proper divisors (2948313).

8223639 is a wasteful number, since it uses less digits than its factorization.

8223639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51777.

The product of its digits is 15552, while the sum is 33.

The square root of 8223639 is about 2867.6887906466. The cubic root of 8223639 is about 201.8465570001.

The spelling of 8223639 in words is "eight million, two hundred twenty-three thousand, six hundred thirty-nine".