47979147 has 8 divisors (see below), whose sum is σ = 64018944. Its totient is φ = 31962728.

The previous prime is 47979131. The next prime is 47979157. The reversal of 47979147 is 74197974.

47979147 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47979147 - 2⁴ = 47979131 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47979096 and 47979105.

It is not an unprimeable number, because it can be changed into a prime (47979157) 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 7 ways as a sum of consecutive naturals, for example, 303 + ... + 9800.

It is an arithmetic number, because the mean of its divisors is an integer number (8002368).

Almost surely, 2^47979147 is an apocalyptic number.

47979147 is a deficient number, since it is larger than the sum of its proper divisors (16039797).

47979147 is a wasteful number, since it uses less digits than its factorization.

47979147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11689.

The product of its digits is 444528, while the sum is 48.

The square root of 47979147 is about 6926.6981311444. The cubic root of 47979147 is about 363.3714825882.

The spelling of 47979147 in words is "forty-seven million, nine hundred seventy-nine thousand, one hundred forty-seven".