47481913 has 4 divisors (see below), whose sum is σ = 49546368. Its totient is φ = 45417460.

The previous prime is 47481899. The next prime is 47481937. The reversal of 47481913 is 31918474.

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.

It is a cyclic number.

It is not a de Polignac number, because 47481913 - 2²¹ = 45384761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47481943) 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, 1032193 + ... + 1032238.

It is an arithmetic number, because the mean of its divisors is an integer number (12386592).

Almost surely, 2^47481913 is an apocalyptic number.

It is an amenable number.

47481913 is a deficient number, since it is larger than the sum of its proper divisors (2064455).

47481913 is a wasteful number, since it uses less digits than its factorization.

47481913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064454.

The product of its digits is 24192, while the sum is 37.

The square root of 47481913 is about 6890.7120822162. The cubic root of 47481913 is about 362.1118489783. Note that the first 3 decimals are identical.

The spelling of 47481913 in words is "forty-seven million, four hundred eighty-one thousand, nine hundred thirteen".