47923321 has 4 divisors (see below), whose sum is σ = 48034944. Its totient is φ = 47811700.

The previous prime is 47923319. The next prime is 47923327. The reversal of 47923321 is 12332974.

47923321 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: 12332974 = 2 ⋅6166487.

It is a cyclic number.

It is not a de Polignac number, because 47923321 - 2¹ = 47923319 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47923327) 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, 55165 + ... + 56026.

It is an arithmetic number, because the mean of its divisors is an integer number (12008736).

Almost surely, 2^47923321 is an apocalyptic number.

It is an amenable number.

47923321 is a deficient number, since it is larger than the sum of its proper divisors (111623).

47923321 is a wasteful number, since it uses less digits than its factorization.

47923321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111622.

The product of its digits is 9072, while the sum is 31.

The square root of 47923321 is about 6922.6671883025. The cubic root of 47923321 is about 363.2304946070.

The spelling of 47923321 in words is "forty-seven million, nine hundred twenty-three thousand, three hundred twenty-one".