47888905 has 4 divisors (see below), whose sum is σ = 57466692. Its totient is φ = 38311120.

The previous prime is 47888903. The next prime is 47888909. The reversal of 47888905 is 50988874.

47888905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33051001 + 14837904 = 5749^2 + 3852^2 .

It is not a de Polignac number, because 47888905 - 2¹ = 47888903 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47888903) 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 3 ways as a sum of consecutive naturals, for example, 4788886 + ... + 4788895.

It is an arithmetic number, because the mean of its divisors is an integer number (14366673).

Almost surely, 2^47888905 is an apocalyptic number.

It is an amenable number.

47888905 is a deficient number, since it is larger than the sum of its proper divisors (9577787).

47888905 is an equidigital number, since it uses as much as digits as its factorization.

47888905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9577786.

The product of its (nonzero) digits is 645120, while the sum is 49.

The square root of 47888905 is about 6920.1809947428. The cubic root of 47888905 is about 363.1435227936.

The spelling of 47888905 in words is "forty-seven million, eight hundred eighty-eight thousand, nine hundred five".