47788961 has 4 divisors (see below), whose sum is σ = 52133424. Its totient is φ = 43444500.

The previous prime is 47788927. The next prime is 47788967. The reversal of 47788961 is 16988774.

47788961 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-47788961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47788967) 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, 2172215 + ... + 2172236.

It is an arithmetic number, because the mean of its divisors is an integer number (13033356).

Almost surely, 2^47788961 is an apocalyptic number.

It is an amenable number.

47788961 is a deficient number, since it is larger than the sum of its proper divisors (4344463).

47788961 is a wasteful number, since it uses less digits than its factorization.

47788961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4344462.

The product of its digits is 677376, while the sum is 50.

The square root of 47788961 is about 6912.9560247408. The cubic root of 47788961 is about 362.8907203678.

The spelling of 47788961 in words is "forty-seven million, seven hundred eighty-eight thousand, nine hundred sixty-one".