47666369 has 2 divisors, whose sum is σ = 47666370. Its totient is φ = 47666368.

The previous prime is 47666329. The next prime is 47666387. The reversal of 47666369 is 96366674.

47666369 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., 38130625 + 9535744 = 6175^2 + 3088^2 .

It is a cyclic number.

It is not a de Polignac number, because 47666369 - 2¹² = 47662273 is a prime.

It is a super-2 number, since 2×47666369² = 4544165467288322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47666329) 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, 23833184 + 23833185.

It is an arithmetic number, because the mean of its divisors is an integer number (23833185).

Almost surely, 2^47666369 is an apocalyptic number.

It is an amenable number.

47666369 is a deficient number, since it is larger than the sum of its proper divisors (1).

47666369 is an equidigital number, since it uses as much as digits as its factorization.

47666369 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 979776, while the sum is 47.

The square root of 47666369 is about 6904.0835018125. The cubic root of 47666369 is about 362.5801493802.

The spelling of 47666369 in words is "forty-seven million, six hundred sixty-six thousand, three hundred sixty-nine".