47423221 has 8 divisors (see below), whose sum is σ = 49982400. Its totient is φ = 44870400.

The previous prime is 47423213. The next prime is 47423227. The reversal of 47423221 is 12232474.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 47423221 - 2³ = 47423213 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 (47423227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28821 + ... + 30421.

It is an arithmetic number, because the mean of its divisors is an integer number (6247800).

Almost surely, 2^47423221 is an apocalyptic number.

It is an amenable number.

47423221 is a deficient number, since it is larger than the sum of its proper divisors (2559179).

47423221 is a wasteful number, since it uses less digits than its factorization.

47423221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3179.

The product of its digits is 2688, while the sum is 25.

The square root of 47423221 is about 6886.4519892322. The cubic root of 47423221 is about 361.9625863066.

Adding to 47423221 its reverse (12232474), we get a palindrome (59655695).

The spelling of 47423221 in words is "forty-seven million, four hundred twenty-three thousand, two hundred twenty-one".