8223987 has 8 divisors (see below), whose sum is σ = 10978704. Its totient is φ = 5475968.

The previous prime is 8223977. The next prime is 8223989. The reversal of 8223987 is 7893228.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8223987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8223989) 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, 3343 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (1372338).

Almost surely, 2^8223987 is an apocalyptic number.

8223987 is a deficient number, since it is larger than the sum of its proper divisors (2754717).

8223987 is a wasteful number, since it uses less digits than its factorization.

8223987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349.

The product of its digits is 48384, while the sum is 39.

The square root of 8223987 is about 2867.7494660448. The cubic root of 8223987 is about 201.8494041423.

The spelling of 8223987 in words is "eight million, two hundred twenty-three thousand, nine hundred eighty-seven".