8327921 has 4 divisors (see below), whose sum is σ = 9517632. Its totient is φ = 7138212.

The previous prime is 8327887. The next prime is 8327983. The reversal of 8327921 is 1297238.

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, and also an emirpimes, since its reverse is a distinct semiprime: 1297238 = 2 ⋅648619.

It is a cyclic number.

It is not a de Polignac number, because 8327921 - 2⁶ = 8327857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8327021) 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, 594845 + ... + 594858.

It is an arithmetic number, because the mean of its divisors is an integer number (2379408).

Almost surely, 2^8327921 is an apocalyptic number.

It is an amenable number.

8327921 is a deficient number, since it is larger than the sum of its proper divisors (1189711).

8327921 is a wasteful number, since it uses less digits than its factorization.

8327921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189710.

The product of its digits is 6048, while the sum is 32.

The square root of 8327921 is about 2885.8137500539. The cubic root of 8327921 is about 202.6961651406.

The spelling of 8327921 in words is "eight million, three hundred twenty-seven thousand, nine hundred twenty-one".