47919313 has 4 divisors (see below), whose sum is σ = 51605428. Its totient is φ = 44233200.

The previous prime is 47919299. The next prime is 47919331. The reversal of 47919313 is 31391974.

47919313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31391974 = 2 ⋅15695987.

It can be written as a sum of positive squares in 2 ways, for example, as 17581249 + 30338064 = 4193^2 + 5508^2 .

It is a cyclic number.

It is not a de Polignac number, because 47919313 - 2¹³ = 47911121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47919353) 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 3 ways as a sum of consecutive naturals, for example, 1843038 + ... + 1843063.

It is an arithmetic number, because the mean of its divisors is an integer number (12901357).

Almost surely, 2^47919313 is an apocalyptic number.

It is an amenable number.

47919313 is a deficient number, since it is larger than the sum of its proper divisors (3686115).

47919313 is a wasteful number, since it uses less digits than its factorization.

47919313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3686114.

The product of its digits is 20412, while the sum is 37.

The square root of 47919313 is about 6922.3776984502. The cubic root of 47919313 is about 363.2203682331.

The spelling of 47919313 in words is "forty-seven million, nine hundred nineteen thousand, three hundred thirteen".