47993186 has 4 divisors (see below), whose sum is σ = 71989782. Its totient is φ = 23996592.

The previous prime is 47993167. The next prime is 47993201. The reversal of 47993186 is 68139974.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 43811161 + 4182025 = 6619^2 + 2045^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 47993186.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11998295 + ... + 11998298.

Almost surely, 2^47993186 is an apocalyptic number.

47993186 is a deficient number, since it is larger than the sum of its proper divisors (23996596).

47993186 is a wasteful number, since it uses less digits than its factorization.

47993186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23996595.

The product of its digits is 326592, while the sum is 47.

The square root of 47993186 is about 6927.7114547302. The cubic root of 47993186 is about 363.4069207252.

The spelling of 47993186 in words is "forty-seven million, nine hundred ninety-three thousand, one hundred eighty-six".