4447661497 has 2 divisors, whose sum is σ = 4447661498. Its totient is φ = 4447661496.

The previous prime is 4447661467. The next prime is 4447661549. The reversal of 4447661497 is 7941667444.

It is an a-pointer prime, because the next prime (4447661549) can be obtained adding 4447661497 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3409275321 + 1038386176 = 58389^2 + 32224^2 .

It is a cyclic number.

It is not a de Polignac number, because 4447661497 - 2¹¹ = 4447659449 is a prime.

It is not a weakly prime, because it can be changed into another prime (4447661447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2223830748 + 2223830749.

It is an arithmetic number, because the mean of its divisors is an integer number (2223830749).

Almost surely, 2^4447661497 is an apocalyptic number.

It is an amenable number.

4447661497 is a deficient number, since it is larger than the sum of its proper divisors (1).

4447661497 is an equidigital number, since it uses as much as digits as its factorization.

4447661497 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4064256, while the sum is 52.

The square root of 4447661497 is about 66690.7901962482. The cubic root of 4447661497 is about 1644.5379839037.

The spelling of 4447661497 in words is "four billion, four hundred forty-seven million, six hundred sixty-one thousand, four hundred ninety-seven".