47144879 has 2 divisors, whose sum is σ = 47144880. Its totient is φ = 47144878.

The previous prime is 47144869. The next prime is 47144921. The reversal of 47144879 is 97844174.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47144879 - 2⁴ = 47144863 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47144809) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23572439 + 23572440.

It is an arithmetic number, because the mean of its divisors is an integer number (23572440).

Almost surely, 2^47144879 is an apocalyptic number.

47144879 is a deficient number, since it is larger than the sum of its proper divisors (1).

47144879 is an equidigital number, since it uses as much as digits as its factorization.

47144879 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 44.

The square root of 47144879 is about 6866.2128571724. The cubic root of 47144879 is about 361.2530383720.

The spelling of 47144879 in words is "forty-seven million, one hundred forty-four thousand, eight hundred seventy-nine".