47842179 has 24 divisors (see below), whose sum is σ = 80952768. Its totient is φ = 24852240.

The previous prime is 47842169. The next prime is 47842183. The reversal of 47842179 is 97124874.

It is a happy number.

It is not a de Polignac number, because 47842179 - 2⁸ = 47841923 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47842179.

It is not an unprimeable number, because it can be changed into a prime (47842159) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13177 + ... + 16410.

It is an arithmetic number, because the mean of its divisors is an integer number (3373032).

Almost surely, 2^47842179 is an apocalyptic number.

47842179 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

47842179 is a deficient number, since it is larger than the sum of its proper divisors (33110589).

47842179 is a wasteful number, since it uses less digits than its factorization.

47842179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29615 (or 29608 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 47842179 is about 6916.8041030522. The cubic root of 47842179 is about 363.0253759704.

The spelling of 47842179 in words is "forty-seven million, eight hundred forty-two thousand, one hundred seventy-nine".