47161994 has 16 divisors (see below), whose sum is σ = 77315040. Its totient is φ = 21398160.

The previous prime is 47161993. The next prime is 47162039. The reversal of 47161994 is 49916174.

47161994 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (47161993) 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, 12872 + ... + 16124.

It is an arithmetic number, because the mean of its divisors is an integer number (4832190).

Almost surely, 2^47161994 is an apocalyptic number.

47161994 is a deficient number, since it is larger than the sum of its proper divisors (30153046).

47161994 is a wasteful number, since it uses less digits than its factorization.

47161994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3925.

The product of its digits is 54432, while the sum is 41.

The square root of 47161994 is about 6867.4590643119. The cubic root of 47161994 is about 361.2967482994.

The spelling of 47161994 in words is "forty-seven million, one hundred sixty-one thousand, nine hundred ninety-four".