47666417 has 2 divisors, whose sum is σ = 47666418. Its totient is φ = 47666416.

The previous prime is 47666407. The next prime is 47666429. The reversal of 47666417 is 71466674.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32307856 + 15358561 = 5684^2 + 3919^2 .

It is a cyclic number.

It is not a de Polignac number, because 47666417 - 2¹⁴ = 47650033 is a prime.

It is not a weakly prime, because it can be changed into another prime (47666407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23833208 + 23833209.

It is an arithmetic number, because the mean of its divisors is an integer number (23833209).

Almost surely, 2^47666417 is an apocalyptic number.

It is an amenable number.

47666417 is a deficient number, since it is larger than the sum of its proper divisors (1).

47666417 is an equidigital number, since it uses as much as digits as its factorization.

47666417 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 41.

The square root of 47666417 is about 6904.0869780153. The cubic root of 47666417 is about 362.5802710861.

The spelling of 47666417 in words is "forty-seven million, six hundred sixty-six thousand, four hundred seventeen".