47138109 has 16 divisors (see below), whose sum is σ = 66700800. Its totient is φ = 29547056.

The previous prime is 47138083. The next prime is 47138129. The reversal of 47138109 is 90183174.

It is a cyclic number.

It is not a de Polignac number, because 47138109 - 2¹⁵ = 47105341 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47138109.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47138129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1719 + ... + 9860.

It is an arithmetic number, because the mean of its divisors is an integer number (4168800).

Almost surely, 2^47138109 is an apocalyptic number.

It is an amenable number.

47138109 is a deficient number, since it is larger than the sum of its proper divisors (19562691).

47138109 is a wasteful number, since it uses less digits than its factorization.

47138109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11664.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 47138109 is about 6865.7198457263. The cubic root of 47138109 is about 361.2357455772.

The spelling of 47138109 in words is "forty-seven million, one hundred thirty-eight thousand, one hundred nine".