47956143 has 4 divisors (see below), whose sum is σ = 63941528. Its totient is φ = 31970760.

The previous prime is 47956123. The next prime is 47956157. The reversal of 47956143 is 34165974.

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

It is not a de Polignac number, because 47956143 - 2⁹ = 47955631 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 (47956123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7992688 + ... + 7992693.

It is an arithmetic number, because the mean of its divisors is an integer number (15985382).

Almost surely, 2^47956143 is an apocalyptic number.

47956143 is a deficient number, since it is larger than the sum of its proper divisors (15985385).

47956143 is a wasteful number, since it uses less digits than its factorization.

47956143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15985384.

The product of its digits is 90720, while the sum is 39.

The square root of 47956143 is about 6925.0374006210. The cubic root of 47956143 is about 363.3133994806.

The spelling of 47956143 in words is "forty-seven million, nine hundred fifty-six thousand, one hundred forty-three".