8891147 has 2 divisors, whose sum is σ = 8891148. Its totient is φ = 8891146.

The previous prime is 8891093. The next prime is 8891149. The reversal of 8891147 is 7411988.

8891147 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 8891147 - 2⁶ = 8891083 is a prime.

Together with 8891149, it forms a pair of twin primes.

It is a Chen prime.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 8891147.

It is not a weakly prime, because it can be changed into another prime (8891149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4445573 + 4445574.

It is an arithmetic number, because the mean of its divisors is an integer number (4445574).

Almost surely, 2^8891147 is an apocalyptic number.

8891147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8891147 is an equidigital number, since it uses as much as digits as its factorization.

8891147 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 38.

The square root of 8891147 is about 2981.8026426979. The cubic root of 8891147 is about 207.1663734357.

The spelling of 8891147 in words is "eight million, eight hundred ninety-one thousand, one hundred forty-seven".