47081189 has 2 divisors, whose sum is σ = 47081190. Its totient is φ = 47081188.

The previous prime is 47081171. The next prime is 47081191. The reversal of 47081189 is 98118074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31832164 + 15249025 = 5642^2 + 3905^2 .

It is a cyclic number.

It is not a de Polignac number, because 47081189 - 2⁸ = 47080933 is a prime.

It is a super-3 number, since 3×47081189³ (a number of 24 digits) contains 333 as substring.

It is a Sophie Germain prime.

Together with 47081191, it forms a pair of twin primes.

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 (47087189) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23540594 + 23540595.

It is an arithmetic number, because the mean of its divisors is an integer number (23540595).

Almost surely, 2^47081189 is an apocalyptic number.

It is an amenable number.

47081189 is a deficient number, since it is larger than the sum of its proper divisors (1).

47081189 is an equidigital number, since it uses as much as digits as its factorization.

47081189 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 47081189 is about 6861.5733618464. The cubic root of 47081189 is about 361.0902877530.

The spelling of 47081189 in words is "forty-seven million, eighty-one thousand, one hundred eighty-nine".