47005405 has 8 divisors (see below), whose sum is σ = 57606912. Its totient is φ = 36804048.

The previous prime is 47005403. The next prime is 47005417. The reversal of 47005405 is 50450074.

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 47005405 - 2¹ = 47005403 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47005405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47005403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99777 + ... + 100246.

It is an arithmetic number, because the mean of its divisors is an integer number (7200864).

Almost surely, 2^47005405 is an apocalyptic number.

It is an amenable number.

47005405 is a deficient number, since it is larger than the sum of its proper divisors (10601507).

47005405 is a wasteful number, since it uses less digits than its factorization.

47005405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200075.

The product of its (nonzero) digits is 2800, while the sum is 25.

The square root of 47005405 is about 6856.0487892080. The cubic root of 47005405 is about 360.8964413169.

Adding to 47005405 its reverse (50450074), we get a palindrome (97455479).

The spelling of 47005405 in words is "forty-seven million, five thousand, four hundred five".