47979549 has 12 divisors (see below), whose sum is σ = 69952896. Its totient is φ = 31686792.

The previous prime is 47979521. The next prime is 47979551. The reversal of 47979549 is 94597974.

47979549 is a `hidden beast` number, since 4 + 7 + 97 + 9 + 549 = 666.

47979549 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47979549 - 2⁵ = 47979517 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 47979495 and 47979504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47979509) 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 11 ways as a sum of consecutive naturals, for example, 23949 + ... + 25874.

It is an arithmetic number, because the mean of its divisors is an integer number (5829408).

Almost surely, 2^47979549 is an apocalyptic number.

It is an amenable number.

47979549 is a deficient number, since it is larger than the sum of its proper divisors (21973347).

47979549 is a wasteful number, since it uses less digits than its factorization.

47979549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49936 (or 49933 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 47979549 is about 6926.7271492387. The cubic root of 47979549 is about 363.3724974383.

The spelling of 47979549 in words is "forty-seven million, nine hundred seventy-nine thousand, five hundred forty-nine".