47717429 has 2 divisors, whose sum is σ = 47717430. Its totient is φ = 47717428.

The previous prime is 47717413. The next prime is 47717431. The reversal of 47717429 is 92471774.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45252529 + 2464900 = 6727^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 47717429 - 2⁴ = 47717413 is a prime.

Together with 47717431, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47717129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23858714 + 23858715.

It is an arithmetic number, because the mean of its divisors is an integer number (23858715).

Almost surely, 2^47717429 is an apocalyptic number.

It is an amenable number.

47717429 is a deficient number, since it is larger than the sum of its proper divisors (1).

47717429 is an equidigital number, since it uses as much as digits as its factorization.

47717429 is an evil number, because the sum of its binary digits is even.

The product of its digits is 98784, while the sum is 41.

The square root of 47717429 is about 6907.7803236640. The cubic root of 47717429 is about 362.7095679219.

The spelling of 47717429 in words is "forty-seven million, seven hundred seventeen thousand, four hundred twenty-nine".