47438881 has 8 divisors (see below), whose sum is σ = 55025600. Its totient is φ = 40054608.

The previous prime is 47438879. The next prime is 47438887. The reversal of 47438881 is 18883474.

47438881 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 a cyclic number.

It is not a de Polignac number, because 47438881 - 2¹ = 47438879 is a prime.

It is a super-2 number, since 2×47438881² = 4500894861064322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (47438887) 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, 50106 + ... + 51043.

It is an arithmetic number, because the mean of its divisors is an integer number (6878200).

Almost surely, 2^47438881 is an apocalyptic number.

It is an amenable number.

47438881 is a deficient number, since it is larger than the sum of its proper divisors (7586719).

47438881 is a wasteful number, since it uses less digits than its factorization.

47438881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101223.

The product of its digits is 172032, while the sum is 43.

The square root of 47438881 is about 6887.5889104969. The cubic root of 47438881 is about 362.0024241059.

The spelling of 47438881 in words is "forty-seven million, four hundred thirty-eight thousand, eight hundred eighty-one".