47008691 has 2 divisors, whose sum is σ = 47008692. Its totient is φ = 47008690.

The previous prime is 47008667. The next prime is 47008693. The reversal of 47008691 is 19680074.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-47008691 is a prime.

Together with 47008693, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47008693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23504345 + 23504346.

It is an arithmetic number, because the mean of its divisors is an integer number (23504346).

Almost surely, 2^47008691 is an apocalyptic number.

47008691 is a deficient number, since it is larger than the sum of its proper divisors (1).

47008691 is an equidigital number, since it uses as much as digits as its factorization.

47008691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 47008691 is about 6856.2884274219. The cubic root of 47008691 is about 360.9048508326.

The spelling of 47008691 in words is "forty-seven million, eight thousand, six hundred ninety-one".