8921911 has 2 divisors, whose sum is σ = 8921912. Its totient is φ = 8921910.

The previous prime is 8921873. The next prime is 8921917. The reversal of 8921911 is 1191298.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8921911 - 2¹⁵ = 8889143 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8921917) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4460955 + 4460956.

It is an arithmetic number, because the mean of its divisors is an integer number (4460956).

Almost surely, 2^8921911 is an apocalyptic number.

8921911 is a deficient number, since it is larger than the sum of its proper divisors (1).

8921911 is an equidigital number, since it uses as much as digits as its factorization.

8921911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 31.

The square root of 8921911 is about 2986.9568125435. The cubic root of 8921911 is about 207.4050351726.

The spelling of 8921911 in words is "eight million, nine hundred twenty-one thousand, nine hundred eleven".