47135409 has 24 divisors (see below), whose sum is σ = 67372992. Its totient is φ = 29302560.

The previous prime is 47135401. The next prime is 47135449. The reversal of 47135409 is 90453174.

It is not a de Polignac number, because 47135409 - 2³ = 47135401 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47135409.

It is not an unprimeable number, because it can be changed into a prime (47135401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 76587 + ... + 77199.

It is an arithmetic number, because the mean of its divisors is an integer number (2807208).

Almost surely, 2^47135409 is an apocalyptic number.

It is an amenable number.

47135409 is a deficient number, since it is larger than the sum of its proper divisors (20237583).

47135409 is a wasteful number, since it uses less digits than its factorization.

47135409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 725 (or 706 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 47135409 is about 6865.5232138563. The cubic root of 47135409 is about 361.2288484321.

The spelling of 47135409 in words is "forty-seven million, one hundred thirty-five thousand, four hundred nine".