47547913 has 4 divisors (see below), whose sum is σ = 54340480. Its totient is φ = 40755348.

The previous prime is 47547901. The next prime is 47547917. The reversal of 47547913 is 31974574.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 31974574 = 2 ⋅15987287.

It is a cyclic number.

It is not a de Polignac number, because 47547913 - 2¹³ = 47539721 is a prime.

It is a super-3 number, since 3×47547913³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47547917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3396273 + ... + 3396286.

It is an arithmetic number, because the mean of its divisors is an integer number (13585120).

Almost surely, 2^47547913 is an apocalyptic number.

It is an amenable number.

47547913 is a deficient number, since it is larger than the sum of its proper divisors (6792567).

47547913 is an equidigital number, since it uses as much as digits as its factorization.

47547913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6792566.

The product of its digits is 105840, while the sum is 40.

The square root of 47547913 is about 6895.4994742948. The cubic root of 47547913 is about 362.2795501488.

The spelling of 47547913 in words is "forty-seven million, five hundred forty-seven thousand, nine hundred thirteen".