47279849 has 4 divisors (see below), whose sum is σ = 47383764. Its totient is φ = 47175936.

The previous prime is 47279801. The next prime is 47279851. The reversal of 47279849 is 94897274.

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

It can be written as a sum of positive squares in 2 ways, for example, as 28729600 + 18550249 = 5360^2 + 4307^2 .

It is a cyclic number.

It is not a de Polignac number, because 47279849 - 2⁸ = 47279593 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 47279797 and 47279806.

It is not an unprimeable number, because it can be changed into a prime (47279879) 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, 51272 + ... + 52185.

It is an arithmetic number, because the mean of its divisors is an integer number (11845941).

Almost surely, 2^47279849 is an apocalyptic number.

It is an amenable number.

47279849 is a deficient number, since it is larger than the sum of its proper divisors (103915).

47279849 is a wasteful number, since it uses less digits than its factorization.

47279849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103914.

The product of its digits is 1016064, while the sum is 50.

The square root of 47279849 is about 6876.0343949111. The cubic root of 47279849 is about 361.5974509415.

The spelling of 47279849 in words is "forty-seven million, two hundred seventy-nine thousand, eight hundred forty-nine".