47009719 has 2 divisors, whose sum is σ = 47009720. Its totient is φ = 47009718.

The previous prime is 47009717. The next prime is 47009747. The reversal of 47009719 is 91790074.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 47009719 - 2¹ = 47009717 is a prime.

It is a super-2 number, since 2×47009719² = 4419827360917922, which contains 22 as substring.

Together with 47009717, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47009717) 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, 23504859 + 23504860.

It is an arithmetic number, because the mean of its divisors is an integer number (23504860).

Almost surely, 2^47009719 is an apocalyptic number.

47009719 is a deficient number, since it is larger than the sum of its proper divisors (1).

47009719 is an equidigital number, since it uses as much as digits as its factorization.

47009719 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15876, while the sum is 37.

The square root of 47009719 is about 6856.3633946867. The cubic root of 47009719 is about 360.9074816049.

The spelling of 47009719 in words is "forty-seven million, nine thousand, seven hundred nineteen".