47664189 has 6 divisors (see below), whose sum is σ = 68848286. Its totient is φ = 31776120.

The previous prime is 47664187. The next prime is 47664229. The reversal of 47664189 is 98146674.

It can be written as a sum of positive squares in only one way, i.e., 47032164 + 632025 = 6858^2 + 795^2 .

It is not a de Polignac number, because 47664189 - 2¹ = 47664187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47664187) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2648002 + ... + 2648019.

Almost surely, 2^47664189 is an apocalyptic number.

It is an amenable number.

47664189 is a deficient number, since it is larger than the sum of its proper divisors (21184097).

47664189 is a wasteful number, since it uses less digits than its factorization.

47664189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5296027 (or 5296024 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 47664189 is about 6903.9256224267. The cubic root of 47664189 is about 362.5746218158.

The spelling of 47664189 in words is "forty-seven million, six hundred sixty-four thousand, one hundred eighty-nine".