47517439 has 2 divisors, whose sum is σ = 47517440. Its totient is φ = 47517438.

The previous prime is 47517427. The next prime is 47517443. The reversal of 47517439 is 93471574.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47517439 - 2⁷ = 47517311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47517409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23758719 + 23758720.

It is an arithmetic number, because the mean of its divisors is an integer number (23758720).

Almost surely, 2^47517439 is an apocalyptic number.

47517439 is a deficient number, since it is larger than the sum of its proper divisors (1).

47517439 is an equidigital number, since it uses as much as digits as its factorization.

47517439 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 105840, while the sum is 40.

The square root of 47517439 is about 6893.2894179775. The cubic root of 47517439 is about 362.2021372424.

The spelling of 47517439 in words is "forty-seven million, five hundred seventeen thousand, four hundred thirty-nine".