47105909 has 8 divisors (see below), whose sum is σ = 49230720. Its totient is φ = 44987536.

The previous prime is 47105899. The next prime is 47105911. The reversal of 47105909 is 90950174.

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 47105909 - 2⁴ = 47105893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47105939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19247 + ... + 21555.

It is an arithmetic number, because the mean of its divisors is an integer number (6153840).

Almost surely, 2^47105909 is an apocalyptic number.

It is an amenable number.

47105909 is a deficient number, since it is larger than the sum of its proper divisors (2124811).

47105909 is a wasteful number, since it uses less digits than its factorization.

47105909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3219.

The product of its (nonzero) digits is 11340, while the sum is 35.

The square root of 47105909 is about 6863.3744615896. The cubic root of 47105909 is about 361.1534735698.

The spelling of 47105909 in words is "forty-seven million, one hundred five thousand, nine hundred nine".