47381866 has 16 divisors (see below), whose sum is σ = 81429120. Its totient is φ = 20255760.

The previous prime is 47381843. The next prime is 47381869. The reversal of 47381866 is 66818374.

It is not an unprimeable number, because it can be changed into a prime (47381869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1875 + ... + 9913.

It is an arithmetic number, because the mean of its divisors is an integer number (5089320).

Almost surely, 2^47381866 is an apocalyptic number.

47381866 is a deficient number, since it is larger than the sum of its proper divisors (34047254).

47381866 is a wasteful number, since it uses less digits than its factorization.

47381866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8469.

The product of its digits is 193536, while the sum is 43.

The square root of 47381866 is about 6883.4486995982. The cubic root of 47381866 is about 361.8573402848.

The spelling of 47381866 in words is "forty-seven million, three hundred eighty-one thousand, eight hundred sixty-six".