47047905 has 32 divisors (see below), whose sum is σ = 85910400. Its totient is φ = 24411456.

The previous prime is 47047883. The next prime is 47047909. The reversal of 47047905 is 50974074.

It is a happy number.

It is not a de Polignac number, because 47047905 - 2⁶ = 47047841 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 47047905.

It is not an unprimeable number, because it can be changed into a prime (47047909) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 286 + ... + 9704.

It is an arithmetic number, because the mean of its divisors is an integer number (2684700).

Almost surely, 2^47047905 is an apocalyptic number.

47047905 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

47047905 is a deficient number, since it is larger than the sum of its proper divisors (38862495).

47047905 is a wasteful number, since it uses less digits than its factorization.

47047905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9470 (or 9464 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 47047905 is about 6859.1475417868. The cubic root of 47047905 is about 361.0051768862.

The spelling of 47047905 in words is "forty-seven million, forty-seven thousand, nine hundred five".