47118965 has 4 divisors (see below), whose sum is σ = 56542764. Its totient is φ = 37695168.

The previous prime is 47118959. The next prime is 47118989. The reversal of 47118965 is 56981174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 56981174 = 2 ⋅28490587.

It can be written as a sum of positive squares in 2 ways, for example, as 29495761 + 17623204 = 5431^2 + 4198^2 .

It is a cyclic number.

It is not a de Polignac number, because 47118965 - 2⁴ = 47118949 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4711892 + ... + 4711901.

It is an arithmetic number, because the mean of its divisors is an integer number (14135691).

Almost surely, 2^47118965 is an apocalyptic number.

It is an amenable number.

47118965 is a deficient number, since it is larger than the sum of its proper divisors (9423799).

47118965 is an equidigital number, since it uses as much as digits as its factorization.

47118965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9423798.

The product of its digits is 60480, while the sum is 41.

The square root of 47118965 is about 6864.3255313250. The cubic root of 47118965 is about 361.1868365759.

The spelling of 47118965 in words is "forty-seven million, one hundred eighteen thousand, nine hundred sixty-five".