47421589 has 2 divisors, whose sum is σ = 47421590. Its totient is φ = 47421588.

The previous prime is 47421581. The next prime is 47421593. The reversal of 47421589 is 98512474.

47421589 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40832100 + 6589489 = 6390^2 + 2567^2 .

It is a cyclic number.

It is not a de Polignac number, because 47421589 - 2³ = 47421581 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47421581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23710794 + 23710795.

It is an arithmetic number, because the mean of its divisors is an integer number (23710795).

Almost surely, 2^47421589 is an apocalyptic number.

It is an amenable number.

47421589 is a deficient number, since it is larger than the sum of its proper divisors (1).

47421589 is an equidigital number, since it uses as much as digits as its factorization.

47421589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 80640, while the sum is 40.

The square root of 47421589 is about 6886.3334946835. Note that the first 3 decimals coincide. The cubic root of 47421589 is about 361.9584341233.

The spelling of 47421589 in words is "forty-seven million, four hundred twenty-one thousand, five hundred eighty-nine".