47931222 has 8 divisors (see below), whose sum is σ = 95862456. Its totient is φ = 15977072.

The previous prime is 47931209. The next prime is 47931223. The reversal of 47931222 is 22213974.

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

47931222 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 47931222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47931223) 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 3 ways as a sum of consecutive naturals, for example, 3994263 + ... + 3994274.

It is an arithmetic number, because the mean of its divisors is an integer number (11982807).

Almost surely, 2^47931222 is an apocalyptic number.

47931222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47931222 is a wasteful number, since it uses less digits than its factorization.

47931222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7988542.

The product of its digits is 6048, while the sum is 30.

The square root of 47931222 is about 6923.2378263353. The cubic root of 47931222 is about 363.2504551494.

The spelling of 47931222 in words is "forty-seven million, nine hundred thirty-one thousand, two hundred twenty-two".