8921873 has 2 divisors, whose sum is σ = 8921874. Its totient is φ = 8921872.

The previous prime is 8921867. The next prime is 8921911. The reversal of 8921873 is 3781298.

It is an a-pointer prime, because the next prime (8921911) can be obtained adding 8921873 to its sum of digits (38).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7118224 + 1803649 = 2668^2 + 1343^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8921873 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is equal to p₅₉₇₅₈₄ and since 8921873 and 597584 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (8921833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4460936 + 4460937.

It is an arithmetic number, because the mean of its divisors is an integer number (4460937).

Almost surely, 2^8921873 is an apocalyptic number.

It is an amenable number.

8921873 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921873 is an equidigital number, since it uses as much as digits as its factorization.

8921873 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24192, while the sum is 38.

The square root of 8921873 is about 2986.9504515475. The cubic root of 8921873 is about 207.4047407139.

The spelling of 8921873 in words is "eight million, nine hundred twenty-one thousand, eight hundred seventy-three".