47228477 has 4 divisors (see below), whose sum is σ = 47246880. Its totient is φ = 47210076.

The previous prime is 47228449. The next prime is 47228479. The reversal of 47228477 is 77482274.

47228477 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, and also an emirpimes, since its reverse is a distinct semiprime: 77482274 = 2 ⋅38741137.

It is a cyclic number.

It is not a de Polignac number, because 47228477 - 2¹² = 47224381 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 (47228479) 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, 4577 + ... + 10742.

It is an arithmetic number, because the mean of its divisors is an integer number (11811720).

Almost surely, 2^47228477 is an apocalyptic number.

It is an amenable number.

47228477 is a deficient number, since it is larger than the sum of its proper divisors (18403).

47228477 is a wasteful number, since it uses less digits than its factorization.

47228477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18402.

The product of its digits is 175616, while the sum is 41.

The square root of 47228477 is about 6872.2977962251. The cubic root of 47228477 is about 361.4664387053.

The spelling of 47228477 in words is "forty-seven million, two hundred twenty-eight thousand, four hundred seventy-seven".