47717149 has 2 divisors, whose sum is σ = 47717150. Its totient is φ = 47717148.

The previous prime is 47717141. The next prime is 47717177. The reversal of 47717149 is 94171774.

It is a happy number.

47717149 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., 45292900 + 2424249 = 6730^2 + 1557^2 .

It is a cyclic number.

It is not a de Polignac number, because 47717149 - 2³ = 47717141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47717141) 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, 23858574 + 23858575.

It is an arithmetic number, because the mean of its divisors is an integer number (23858575).

Almost surely, 2^47717149 is an apocalyptic number.

It is an amenable number.

47717149 is a deficient number, since it is larger than the sum of its proper divisors (1).

47717149 is an equidigital number, since it uses as much as digits as its factorization.

47717149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 49392, while the sum is 40.

The square root of 47717149 is about 6907.7600566320. The cubic root of 47717149 is about 362.7088584754.

The spelling of 47717149 in words is "forty-seven million, seven hundred seventeen thousand, one hundred forty-nine".