47228689 has 4 divisors (see below), whose sum is σ = 47646756. Its totient is φ = 46810624.

The previous prime is 47228659. The next prime is 47228747. The reversal of 47228689 is 98682274.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 98682274 = 2 ⋅49341137.

It can be written as a sum of positive squares in 2 ways, for example, as 3932289 + 43296400 = 1983^2 + 6580^2 .

It is a cyclic number.

It is not a de Polignac number, because 47228689 - 2²⁵ = 13674257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47228639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 208864 + ... + 209089.

It is an arithmetic number, because the mean of its divisors is an integer number (11911689).

Almost surely, 2^47228689 is an apocalyptic number.

It is an amenable number.

47228689 is a deficient number, since it is larger than the sum of its proper divisors (418067).

47228689 is a wasteful number, since it uses less digits than its factorization.

47228689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418066.

The product of its digits is 387072, while the sum is 46.

The square root of 47228689 is about 6872.3132204520. The cubic root of 47228689 is about 361.4669795568.

It can be divided in two parts, 472 and 28689, that added together give a triangular number (29161 = T₂₄₁).

The spelling of 47228689 in words is "forty-seven million, two hundred twenty-eight thousand, six hundred eighty-nine".