47774729 has 2 divisors, whose sum is σ = 47774730. Its totient is φ = 47774728.

The previous prime is 47774681. The next prime is 47774747. The reversal of 47774729 is 92747774.

It is a happy number.

47774729 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 can be written as a sum of positive squares in only one way, i.e., 26245129 + 21529600 = 5123^2 + 4640^2 .

It is a cyclic number.

It is not a de Polignac number, because 47774729 - 2¹² = 47770633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47774329) 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, 23887364 + 23887365.

It is an arithmetic number, because the mean of its divisors is an integer number (23887365).

Almost surely, 2^47774729 is an apocalyptic number.

It is an amenable number.

47774729 is a deficient number, since it is larger than the sum of its proper divisors (1).

47774729 is an equidigital number, since it uses as much as digits as its factorization.

47774729 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 691488, while the sum is 47.

The square root of 47774729 is about 6911.9265765776. The cubic root of 47774729 is about 362.8546927064.

The spelling of 47774729 in words is "forty-seven million, seven hundred seventy-four thousand, seven hundred twenty-nine".