8440147 has 2 divisors, whose sum is σ = 8440148. Its totient is φ = 8440146.

The previous prime is 8440139. The next prime is 8440183. The reversal of 8440147 is 7410448.

8440147 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8440147 - 2³ = 8440139 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8444147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4220073 + 4220074.

It is an arithmetic number, because the mean of its divisors is an integer number (4220074).

Almost surely, 2^8440147 is an apocalyptic number.

8440147 is a deficient number, since it is larger than the sum of its proper divisors (1).

8440147 is an equidigital number, since it uses as much as digits as its factorization.

8440147 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 8440147 is about 2905.1931089000. The cubic root of 8440147 is about 203.6026080956.

It can be divided in two parts, 84401 and 47, that added together give a palindrome (84448).

The spelling of 8440147 in words is "eight million, four hundred forty thousand, one hundred forty-seven".