8248921 has 2 divisors, whose sum is σ = 8248922. Its totient is φ = 8248920.

The previous prime is 8248901. The next prime is 8248949. The reversal of 8248921 is 1298428.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7507600 + 741321 = 2740^2 + 861^2 .

It is a cyclic number.

It is not a de Polignac number, because 8248921 - 2¹⁷ = 8117849 is a prime.

It is not a weakly prime, because it can be changed into another prime (8248901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4124460 + 4124461.

It is an arithmetic number, because the mean of its divisors is an integer number (4124461).

Almost surely, 2^8248921 is an apocalyptic number.

It is an amenable number.

8248921 is a deficient number, since it is larger than the sum of its proper divisors (1).

8248921 is an equidigital number, since it uses as much as digits as its factorization.

8248921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9216, while the sum is 34.

The square root of 8248921 is about 2872.0934873364. The cubic root of 8248921 is about 202.0531915602.

The spelling of 8248921 in words is "eight million, two hundred forty-eight thousand, nine hundred twenty-one".