8449747 has 2 divisors, whose sum is σ = 8449748. Its totient is φ = 8449746.

The previous prime is 8449729. The next prime is 8449751. The reversal of 8449747 is 7479448.

It is a happy number.

8449747 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 a de Polignac number, because none of the positive numbers 2^k-8449747 is a prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (8446747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4224873 + 4224874.

It is an arithmetic number, because the mean of its divisors is an integer number (4224874).

Almost surely, 2^8449747 is an apocalyptic number.

8449747 is a deficient number, since it is larger than the sum of its proper divisors (1).

8449747 is an equidigital number, since it uses as much as digits as its factorization.

8449747 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 43.

The square root of 8449747 is about 2906.8448531010. The cubic root of 8449747 is about 203.6797728039.

Subtracting from 8449747 its reverse (7479448), we obtain a cube (970299 = 99³).

The spelling of 8449747 in words is "eight million, four hundred forty-nine thousand, seven hundred forty-seven".