47666429 has 2 divisors, whose sum is σ = 47666430. Its totient is φ = 47666428.

The previous prime is 47666417. The next prime is 47666449. The reversal of 47666429 is 92466674.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40896025 + 6770404 = 6395^2 + 2602^2 .

It is a cyclic number.

It is not a de Polignac number, because 47666429 - 2¹² = 47662333 is a prime.

It is a super-2 number, since 2×47666429² = 4544176907224082, which contains 22 as substring.

It is a Chen prime.

It is equal to p_2869298 and since 47666429 and 2869298 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47666429.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47666449) 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, 23833214 + 23833215.

It is an arithmetic number, because the mean of its divisors is an integer number (23833215).

Almost surely, 2^47666429 is an apocalyptic number.

It is an amenable number.

47666429 is a deficient number, since it is larger than the sum of its proper divisors (1).

47666429 is an equidigital number, since it uses as much as digits as its factorization.

47666429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 435456, while the sum is 44.

The square root of 47666429 is about 6904.0878470657. The cubic root of 47666429 is about 362.5803015126.

The spelling of 47666429 in words is "forty-seven million, six hundred sixty-six thousand, four hundred twenty-nine".