47694945 has 32 divisors (see below), whose sum is σ = 81181440. Its totient is φ = 23828480.

The previous prime is 47694943. The next prime is 47694949. The reversal of 47694945 is 54949674.

It is a happy number.

47694945 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47694945 - 2¹ = 47694943 is a prime.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 47694894 and 47694903.

It is not an unprimeable number, because it can be changed into a prime (47694943) 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 31 ways as a sum of consecutive naturals, for example, 91285 + ... + 91805.

It is an arithmetic number, because the mean of its divisors is an integer number (2536920).

Almost surely, 2^47694945 is an apocalyptic number.

It is an amenable number.

47694945 is a deficient number, since it is larger than the sum of its proper divisors (33486495).

47694945 is a wasteful number, since it uses less digits than its factorization.

47694945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905.

The product of its digits is 1088640, while the sum is 48.

The square root of 47694945 is about 6906.1526916222. The cubic root of 47694945 is about 362.6525905357.

The spelling of 47694945 in words is "forty-seven million, six hundred ninety-four thousand, nine hundred forty-five".