47591889 has 4 divisors (see below), whose sum is σ = 63455856. Its totient is φ = 31727924.

The previous prime is 47591849. The next prime is 47591893. The reversal of 47591889 is 98819574.

47591889 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47591889 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47591809) 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 in 3 ways as a sum of consecutive naturals, for example, 7931979 + ... + 7931984.

It is an arithmetic number, because the mean of its divisors is an integer number (15863964).

Almost surely, 2^47591889 is an apocalyptic number.

It is an amenable number.

47591889 is a deficient number, since it is larger than the sum of its proper divisors (15863967).

47591889 is a wasteful number, since it uses less digits than its factorization.

47591889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15863966.

The product of its digits is 725760, while the sum is 51.

The square root of 47591889 is about 6898.6874838624. The cubic root of 47591889 is about 362.3912038151.

The spelling of 47591889 in words is "forty-seven million, five hundred ninety-one thousand, eight hundred eighty-nine".