47385909 has 24 divisors (see below), whose sum is σ = 70087680. Its totient is φ = 30841152.

The previous prime is 47385889. The next prime is 47385931. The reversal of 47385909 is 90958374.

47385909 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 47385909 - 2⁷ = 47385781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47385109) 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 23 ways as a sum of consecutive naturals, for example, 123532 + ... + 123914.

It is an arithmetic number, because the mean of its divisors is an integer number (2920320).

Almost surely, 2^47385909 is an apocalyptic number.

It is an amenable number.

47385909 is a deficient number, since it is larger than the sum of its proper divisors (22701771).

47385909 is a wasteful number, since it uses less digits than its factorization.

47385909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 47385909 is about 6883.7423687991. The cubic root of 47385909 is about 361.8676321802.

The spelling of 47385909 in words is "forty-seven million, three hundred eighty-five thousand, nine hundred nine".