8097921 has 16 divisors (see below), whose sum is σ = 12920320. Its totient is φ = 4983120.

The previous prime is 8097917. The next prime is 8097941. The reversal of 8097921 is 1297908.

It is a happy number.

It is not a de Polignac number, because 8097921 - 2² = 8097917 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8097941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11185 + ... + 11886.

It is an arithmetic number, because the mean of its divisors is an integer number (807520).

Almost surely, 2^8097921 is an apocalyptic number.

It is an amenable number.

8097921 is a deficient number, since it is larger than the sum of its proper divisors (4822399).

8097921 is a wasteful number, since it uses less digits than its factorization.

8097921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23093 (or 23087 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 36.

The square root of 8097921 is about 2845.6846276424. The cubic root of 8097921 is about 200.8127014420.

The spelling of 8097921 in words is "eight million, ninety-seven thousand, nine hundred twenty-one".