47808461 has 2 divisors, whose sum is σ = 47808462. Its totient is φ = 47808460.

The previous prime is 47808457. The next prime is 47808469. The reversal of 47808461 is 16480874.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 41203561 + 6604900 = 6419^2 + 2570^2 .

It is a cyclic number.

It is not a de Polignac number, because 47808461 - 2² = 47808457 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47808469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23904230 + 23904231.

It is an arithmetic number, because the mean of its divisors is an integer number (23904231).

Almost surely, 2^47808461 is an apocalyptic number.

It is an amenable number.

47808461 is a deficient number, since it is larger than the sum of its proper divisors (1).

47808461 is an equidigital number, since it uses as much as digits as its factorization.

47808461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 43008, while the sum is 38.

The square root of 47808461 is about 6914.3662760950. The cubic root of 47808461 is about 362.9400721192.

The spelling of 47808461 in words is "forty-seven million, eight hundred eight thousand, four hundred sixty-one".