47447669 has 2 divisors, whose sum is σ = 47447670. Its totient is φ = 47447668.

The previous prime is 47447627. The next prime is 47447711. The reversal of 47447669 is 96674474.

It is a balanced prime because it is at equal distance from previous prime (47447627) and next prime (47447711).

It can be written as a sum of positive squares in only one way, i.e., 47430769 + 16900 = 6887^2 + 130^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47447669 is a prime.

It is a super-2 number, since 2×47447669² = 4502562587067122, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47440669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23723834 + 23723835.

It is an arithmetic number, because the mean of its divisors is an integer number (23723835).

Almost surely, 2^47447669 is an apocalyptic number.

It is an amenable number.

47447669 is a deficient number, since it is larger than the sum of its proper divisors (1).

47447669 is an equidigital number, since it uses as much as digits as its factorization.

47447669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1016064, while the sum is 47.

The square root of 47447669 is about 6888.2268400511. The cubic root of 47447669 is about 362.0247762414.

The spelling of 47447669 in words is "forty-seven million, four hundred forty-seven thousand, six hundred sixty-nine".