9145447 has 2 divisors, whose sum is σ = 9145448. Its totient is φ = 9145446.

The previous prime is 9145379. The next prime is 9145457. The reversal of 9145447 is 7445419.

9145447 is digitally balanced in base 2, because in such base 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 9145447 - 2⁷ = 9145319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (9145457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4572723 + 4572724.

It is an arithmetic number, because the mean of its divisors is an integer number (4572724).

Almost surely, 2^9145447 is an apocalyptic number.

9145447 is a deficient number, since it is larger than the sum of its proper divisors (1).

9145447 is an equidigital number, since it uses as much as digits as its factorization.

9145447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 20160, while the sum is 34.

The square root of 9145447 is about 3024.1440111212. The cubic root of 9145447 is about 209.1229254806.

The spelling of 9145447 in words is "nine million, one hundred forty-five thousand, four hundred forty-seven".