47087609 has 2 divisors, whose sum is σ = 47087610. Its totient is φ = 47087608.

The previous prime is 47087591. The next prime is 47087617. The reversal of 47087609 is 90678074.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 41925625 + 5161984 = 6475^2 + 2272^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47087609 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47087699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23543804 + 23543805.

It is an arithmetic number, because the mean of its divisors is an integer number (23543805).

Almost surely, 2^47087609 is an apocalyptic number.

It is an amenable number.

47087609 is a deficient number, since it is larger than the sum of its proper divisors (1).

47087609 is an equidigital number, since it uses as much as digits as its factorization.

47087609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 47087609 is about 6862.0411686320. The cubic root of 47087609 is about 361.1066997874.

The spelling of 47087609 in words is "forty-seven million, eighty-seven thousand, six hundred nine".