47923681 has 16 divisors (see below), whose sum is σ = 54613440. Its totient is φ = 41688000.

The previous prime is 47923669. The next prime is 47923699. The reversal of 47923681 is 18632974.

47923681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 47923681 - 2¹³ = 47915489 is a prime.

It is a super-2 number, since 2×47923681² = 4593358401179522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47923081) 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 15 ways as a sum of consecutive naturals, for example, 61611 + ... + 62383.

It is an arithmetic number, because the mean of its divisors is an integer number (3413340).

Almost surely, 2^47923681 is an apocalyptic number.

It is an amenable number.

47923681 is a deficient number, since it is larger than the sum of its proper divisors (6689759).

47923681 is a wasteful number, since it uses less digits than its factorization.

47923681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1056.

The product of its digits is 72576, while the sum is 40.

The square root of 47923681 is about 6922.6931897925. The cubic root of 47923681 is about 363.2314041339.

The spelling of 47923681 in words is "forty-seven million, nine hundred twenty-three thousand, six hundred eighty-one".