47029221 has 16 divisors (see below), whose sum is σ = 69796800. Its totient is φ = 31297104.

The previous prime is 47029217. The next prime is 47029247. The reversal of 47029221 is 12292074.

It is not a de Polignac number, because 47029221 - 2² = 47029217 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47029261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18775 + ... + 21131.

It is an arithmetic number, because the mean of its divisors is an integer number (4362300).

Almost surely, 2^47029221 is an apocalyptic number.

It is an amenable number.

47029221 is a deficient number, since it is larger than the sum of its proper divisors (22767579).

47029221 is a wasteful number, since it uses less digits than its factorization.

47029221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105 (or 3099 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 47029221 is about 6857.7854297142. The cubic root of 47029221 is about 360.9573822409.

The spelling of 47029221 in words is "forty-seven million, twenty-nine thousand, two hundred twenty-one".