47819 has 2 divisors, whose sum is σ = 47820. Its totient is φ = 47818.

The previous prime is 47809. The next prime is 47837. The reversal of 47819 is 91874.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47819 - 2⁸ = 47563 is a prime.

It is a super-2 number, since 2×47819² = 4573313522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47791 and 47800.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 47819.

It is not a weakly prime, because it can be changed into another prime (47809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23909 + 23910.

It is an arithmetic number, because the mean of its divisors is an integer number (23910).

2⁴⁷⁸¹⁹ is an apocalyptic number.

47819 is a deficient number, since it is larger than the sum of its proper divisors (1).

47819 is an equidigital number, since it uses as much as digits as its factorization.

47819 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2016, while the sum is 29.

The square root of 47819 is about 218.6755587623. The cubic root of 47819 is about 36.2966739257.

The spelling of 47819 in words is "forty-seven thousand, eight hundred nineteen".