2945447 has 2 divisors, whose sum is σ = 2945448. Its totient is φ = 2945446.

The previous prime is 2945441. The next prime is 2945461. The reversal of 2945447 is 7445492.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2945447 - 2⁸ = 2945191 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2945441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1472723 + 1472724.

It is an arithmetic number, because the mean of its divisors is an integer number (1472724).

2^2945447 is an apocalyptic number.

2945447 is a deficient number, since it is larger than the sum of its proper divisors (1).

2945447 is an equidigital number, since it uses as much as digits as its factorization.

2945447 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 2945447 is about 1716.2304623797. The cubic root of 2945447 is about 143.3453922911.

The spelling of 2945447 in words is "two million, nine hundred forty-five thousand, four hundred forty-seven".