47011819 has 2 divisors, whose sum is σ = 47011820. Its totient is φ = 47011818.

The previous prime is 47011759. The next prime is 47011843. The reversal of 47011819 is 91811074.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47011819 - 2¹¹ = 47009771 is a prime.

It is a super-2 number, since 2×47011819² = 4420222251377522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (47011859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23505909 + 23505910.

It is an arithmetic number, because the mean of its divisors is an integer number (23505910).

Almost surely, 2^47011819 is an apocalyptic number.

47011819 is a deficient number, since it is larger than the sum of its proper divisors (1).

47011819 is an equidigital number, since it uses as much as digits as its factorization.

47011819 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 31.

The square root of 47011819 is about 6856.5165353844. The cubic root of 47011819 is about 360.9128556314.

The spelling of 47011819 in words is "forty-seven million, eleven thousand, eight hundred nineteen".