8428317 has 4 divisors (see below), whose sum is σ = 11237760. Its totient is φ = 5618876.

The previous prime is 8428313. The next prime is 8428319. The reversal of 8428317 is 7138248.

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 a cyclic number.

It is not a de Polignac number, because 8428317 - 2² = 8428313 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8428313) 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, 1404717 + ... + 1404722.

It is an arithmetic number, because the mean of its divisors is an integer number (2809440).

Almost surely, 2^8428317 is an apocalyptic number.

It is an amenable number.

8428317 is a deficient number, since it is larger than the sum of its proper divisors (2809443).

8428317 is a wasteful number, since it uses less digits than its factorization.

8428317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2809442.

The product of its digits is 10752, while the sum is 33.

The square root of 8428317 is about 2903.1563857292. The cubic root of 8428317 is about 203.5074381471.

The spelling of 8428317 in words is "eight million, four hundred twenty-eight thousand, three hundred seventeen".