8004217 has 4 divisors (see below), whose sum is σ = 8619940. Its totient is φ = 7388496.

The previous prime is 8004211. The next prime is 8004221. The reversal of 8004217 is 7124008.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1547536 + 6456681 = 1244^2 + 2541^2 .

It is a cyclic number.

It is not a de Polignac number, because 8004217 - 2¹⁹ = 7479929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8004211) 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, 307842 + ... + 307867.

It is an arithmetic number, because the mean of its divisors is an integer number (2154985).

Almost surely, 2^8004217 is an apocalyptic number.

It is an amenable number.

8004217 is a deficient number, since it is larger than the sum of its proper divisors (615723).

8004217 is a wasteful number, since it uses less digits than its factorization.

8004217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 615722.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 8004217 is about 2829.1724938575. The cubic root of 8004217 is about 200.0351354938.

The spelling of 8004217 in words is "eight million, four thousand, two hundred seventeen".