47418691 has 2 divisors, whose sum is σ = 47418692. Its totient is φ = 47418690.

The previous prime is 47418689. The next prime is 47418697. The reversal of 47418691 is 19681474.

47418691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47418691 - 2¹ = 47418689 is a prime.

Together with 47418689, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (47418697) 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 as a sum of consecutive naturals, namely, 23709345 + 23709346.

It is an arithmetic number, because the mean of its divisors is an integer number (23709346).

Almost surely, 2^47418691 is an apocalyptic number.

47418691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47418691 is an equidigital number, since it uses as much as digits as its factorization.

47418691 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 40.

The square root of 47418691 is about 6886.1230747061. The cubic root of 47418691 is about 361.9510607101.

The spelling of 47418691 in words is "forty-seven million, four hundred eighteen thousand, six hundred ninety-one".