47957129 has 4 divisors (see below), whose sum is σ = 52316880. Its totient is φ = 43597380.

The previous prime is 47957113. The next prime is 47957149. The reversal of 47957129 is 92175974.

47957129 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 a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47957129 - 2⁴ = 47957113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47957129.

It is not an unprimeable number, because it can be changed into a prime (47957149) 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, 2179859 + ... + 2179880.

It is an arithmetic number, because the mean of its divisors is an integer number (13079220).

Almost surely, 2^47957129 is an apocalyptic number.

It is an amenable number.

47957129 is a deficient number, since it is larger than the sum of its proper divisors (4359751).

47957129 is a wasteful number, since it uses less digits than its factorization.

47957129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4359750.

The product of its digits is 158760, while the sum is 44.

The square root of 47957129 is about 6925.1085912064. The cubic root of 47957129 is about 363.3158894262.

The spelling of 47957129 in words is "forty-seven million, nine hundred fifty-seven thousand, one hundred twenty-nine".