47645789 has 2 divisors, whose sum is σ = 47645790. Its totient is φ = 47645788.

The previous prime is 47645783. The next prime is 47645809. The reversal of 47645789 is 98754674.

47645789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 21808900 = 5083^2 + 4670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47645789 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47645783) 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, 23822894 + 23822895.

It is an arithmetic number, because the mean of its divisors is an integer number (23822895).

Almost surely, 2^47645789 is an apocalyptic number.

It is an amenable number.

47645789 is a deficient number, since it is larger than the sum of its proper divisors (1).

47645789 is an equidigital number, since it uses as much as digits as its factorization.

47645789 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1693440, while the sum is 50.

The square root of 47645789 is about 6902.5929186067. The cubic root of 47645789 is about 362.5279604275.

The spelling of 47645789 in words is "forty-seven million, six hundred forty-five thousand, seven hundred eighty-nine".