47409405 has 16 divisors (see below), whose sum is σ = 75950784. Its totient is φ = 25253120.

The previous prime is 47409377. The next prime is 47409409. The reversal of 47409405 is 50490474.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-47409405 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47409409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14917 + ... + 17813.

It is an arithmetic number, because the mean of its divisors is an integer number (4746924).

Almost surely, 2^47409405 is an apocalyptic number.

It is an amenable number.

47409405 is a deficient number, since it is larger than the sum of its proper divisors (28541379).

47409405 is a wasteful number, since it uses less digits than its factorization.

47409405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3996.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 47409405 is about 6885.4487871162. The cubic root of 47409405 is about 361.9274322147.

Adding to 47409405 its reverse (50490474), we get a palindrome (97899879).

The spelling of 47409405 in words is "forty-seven million, four hundred nine thousand, four hundred five".