47786117 has 4 divisors (see below), whose sum is σ = 47995020. Its totient is φ = 47577216.

The previous prime is 47786107. The next prime is 47786153. The reversal of 47786117 is 71168774.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71168774 = 2 ⋅35584387.

It can be written as a sum of positive squares in 2 ways, for example, as 24611521 + 23174596 = 4961^2 + 4814^2 .

It is a cyclic number.

It is not a de Polignac number, because 47786117 - 2²² = 43591813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47786107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 104108 + ... + 104565.

It is an arithmetic number, because the mean of its divisors is an integer number (11998755).

Almost surely, 2^47786117 is an apocalyptic number.

It is an amenable number.

47786117 is a deficient number, since it is larger than the sum of its proper divisors (208903).

47786117 is a wasteful number, since it uses less digits than its factorization.

47786117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208902.

The product of its digits is 65856, while the sum is 41.

The square root of 47786117 is about 6912.7503209649. The cubic root of 47786117 is about 362.8835214829.

The spelling of 47786117 in words is "forty-seven million, seven hundred eighty-six thousand, one hundred seventeen".