47632921 has 8 divisors (see below), whose sum is σ = 54523904. Its totient is φ = 40763520.

The previous prime is 47632903. The next prime is 47632951. The reversal of 47632921 is 12923674.

47632921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 47632921 - 2¹¹ = 47630873 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47632901) 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 7 ways as a sum of consecutive naturals, for example, 345 + ... + 9766.

It is an arithmetic number, because the mean of its divisors is an integer number (6815488).

Almost surely, 2^47632921 is an apocalyptic number.

It is an amenable number.

47632921 is a deficient number, since it is larger than the sum of its proper divisors (6890983).

47632921 is a wasteful number, since it uses less digits than its factorization.

47632921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10791.

The product of its digits is 18144, while the sum is 34.

The square root of 47632921 is about 6901.6607421692. The cubic root of 47632921 is about 362.4953207482.

The spelling of 47632921 in words is "forty-seven million, six hundred thirty-two thousand, nine hundred twenty-one".