47240405 has 16 divisors (see below), whose sum is σ = 59318784. Its totient is φ = 36078720.

The previous prime is 47240377. The next prime is 47240407. The reversal of 47240405 is 50404274.

47240405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-47240405 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47240407) 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 15 ways as a sum of consecutive naturals, for example, 7184 + ... + 12086.

It is an arithmetic number, because the mean of its divisors is an integer number (3707424).

Almost surely, 2^47240405 is an apocalyptic number.

It is an amenable number.

47240405 is a deficient number, since it is larger than the sum of its proper divisors (12078379).

47240405 is a wasteful number, since it uses less digits than its factorization.

47240405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4996.

The product of its (nonzero) digits is 4480, while the sum is 26.

The square root of 47240405 is about 6873.1655734458. The cubic root of 47240405 is about 361.4968667368.

Adding to 47240405 its reverse (50404274), we get a palindrome (97644679).

The spelling of 47240405 in words is "forty-seven million, two hundred forty thousand, four hundred five".