47995209 has 12 divisors (see below), whose sum is σ = 69509700. Its totient is φ = 31912224.

The previous prime is 47995201. The next prime is 47995229. The reversal of 47995209 is 90259974.

47995209 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 27092025 + 20903184 = 5205^2 + 4572^2 .

It is not a de Polignac number, because 47995209 - 2³ = 47995201 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47995201) 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, 3354 + ... + 10355.

It is an arithmetic number, because the mean of its divisors is an integer number (5792475).

Almost surely, 2^47995209 is an apocalyptic number.

It is an amenable number.

47995209 is a deficient number, since it is larger than the sum of its proper divisors (21514491).

47995209 is a wasteful number, since it uses less digits than its factorization.

47995209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14104 (or 14101 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 47995209 is about 6927.8574610048. The cubic root of 47995209 is about 363.4120267408.

The spelling of 47995209 in words is "forty-seven million, nine hundred ninety-five thousand, two hundred nine".