47312873 has 4 divisors (see below), whose sum is σ = 47327700. Its totient is φ = 47298048.

The previous prime is 47312849. The next prime is 47312917. The reversal of 47312873 is 37821374.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 37821374 = 2 ⋅18910687.

It can be written as a sum of positive squares in 2 ways, for example, as 40615129 + 6697744 = 6373^2 + 2588^2 .

It is a cyclic number.

It is not a de Polignac number, because 47312873 - 2²⁴ = 30535657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47312803) by changing a digit.

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, 440 + ... + 9737.

It is an arithmetic number, because the mean of its divisors is an integer number (11831925).

Almost surely, 2^47312873 is an apocalyptic number.

It is an amenable number.

47312873 is a deficient number, since it is larger than the sum of its proper divisors (14827).

47312873 is a wasteful number, since it uses less digits than its factorization.

47312873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14826.

The product of its digits is 28224, while the sum is 35.

The square root of 47312873 is about 6878.4353598765. The cubic root of 47312873 is about 361.6816208030.

The spelling of 47312873 in words is "forty-seven million, three hundred twelve thousand, eight hundred seventy-three".