47316991 has 2 divisors, whose sum is σ = 47316992. Its totient is φ = 47316990.

The previous prime is 47316959. The next prime is 47317007. The reversal of 47316991 is 19961374.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47316991 - 2⁵ = 47316959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47316931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23658495 + 23658496.

It is an arithmetic number, because the mean of its divisors is an integer number (23658496).

Almost surely, 2^47316991 is an apocalyptic number.

47316991 is a deficient number, since it is larger than the sum of its proper divisors (1).

47316991 is an equidigital number, since it uses as much as digits as its factorization.

47316991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40824, while the sum is 40.

The square root of 47316991 is about 6878.7346946949. The cubic root of 47316991 is about 361.6921138015.

The spelling of 47316991 in words is "forty-seven million, three hundred sixteen thousand, nine hundred ninety-one".