945439849 has 2 divisors, whose sum is σ = 945439850. Its totient is φ = 945439848.

The previous prime is 945439843. The next prime is 945439879. The reversal of 945439849 is 948934549.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 636805225 + 308634624 = 25235^2 + 17568^2 .

It is a cyclic number.

It is not a de Polignac number, because 945439849 - 2²⁵ = 911885417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 945439849.

It is not a weakly prime, because it can be changed into another prime (945439843) 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, 472719924 + 472719925.

It is an arithmetic number, because the mean of its divisors is an integer number (472719925).

Almost surely, 2^945439849 is an apocalyptic number.

It is an amenable number.

945439849 is a deficient number, since it is larger than the sum of its proper divisors (1).

945439849 is an equidigital number, since it uses as much as digits as its factorization.

945439849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5598720, while the sum is 55.

The square root of 945439849 is about 30748.0056101205. The cubic root of 945439849 is about 981.4721207897.

The spelling of 945439849 in words is "nine hundred forty-five million, four hundred thirty-nine thousand, eight hundred forty-nine".