47043979 has 4 divisors (see below), whose sum is σ = 47093400. Its totient is φ = 46994560.

The previous prime is 47043973. The next prime is 47043989. The reversal of 47043979 is 97934074.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47043979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47043973) 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, 23254 + ... + 25195.

It is an arithmetic number, because the mean of its divisors is an integer number (11773350).

Almost surely, 2^47043979 is an apocalyptic number.

47043979 is a deficient number, since it is larger than the sum of its proper divisors (49421).

47043979 is an equidigital number, since it uses as much as digits as its factorization.

47043979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49420.

The product of its (nonzero) digits is 190512, while the sum is 43.

The square root of 47043979 is about 6858.8613486496. The cubic root of 47043979 is about 360.9951350239.

The spelling of 47043979 in words is "forty-seven million, forty-three thousand, nine hundred seventy-nine".