47771749 has 2 divisors, whose sum is σ = 47771750. Its totient is φ = 47771748.

The previous prime is 47771707. The next prime is 47771783. The reversal of 47771749 is 94717774.

It is a happy number.

47771749 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., 33558849 + 14212900 = 5793^2 + 3770^2 .

It is a cyclic number.

It is not a de Polignac number, because 47771749 - 2²⁵ = 14217317 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47771699 and 47771708.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47771849) 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, 23885874 + 23885875.

It is an arithmetic number, because the mean of its divisors is an integer number (23885875).

Almost surely, 2^47771749 is an apocalyptic number.

It is an amenable number.

47771749 is a deficient number, since it is larger than the sum of its proper divisors (1).

47771749 is an equidigital number, since it uses as much as digits as its factorization.

47771749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 345744, while the sum is 46.

The square root of 47771749 is about 6911.7110037964. The cubic root of 47771749 is about 362.8471480659.

The spelling of 47771749 in words is "forty-seven million, seven hundred seventy-one thousand, seven hundred forty-nine".