47527989 has 4 divisors (see below), whose sum is σ = 63370656. Its totient is φ = 31685324.

The previous prime is 47527969. The next prime is 47527993. The reversal of 47527989 is 98972574.

47527989 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 not a de Polignac number, because 47527989 - 2⁵ = 47527957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47527919) 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, 7921329 + ... + 7921334.

It is an arithmetic number, because the mean of its divisors is an integer number (15842664).

Almost surely, 2^47527989 is an apocalyptic number.

It is an amenable number.

47527989 is a deficient number, since it is larger than the sum of its proper divisors (15842667).

47527989 is a wasteful number, since it uses less digits than its factorization.

47527989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15842666.

The product of its digits is 1270080, while the sum is 51.

The square root of 47527989 is about 6894.0546124904. The cubic root of 47527989 is about 362.2289410844.

It can be divided in two parts, 47527 and 989, that added together give a triangular number (48516 = T₃₁₁).

The spelling of 47527989 in words is "forty-seven million, five hundred twenty-seven thousand, nine hundred eighty-nine".