47779219 has 2 divisors, whose sum is σ = 47779220. Its totient is φ = 47779218.

The previous prime is 47779189. The next prime is 47779229. The reversal of 47779219 is 91297774.

47779219 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47779219 - 2¹⁵ = 47746451 is a prime.

It is a super-2 number, since 2×47779219² = 4565707536499922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (47779229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23889609 + 23889610.

It is an arithmetic number, because the mean of its divisors is an integer number (23889610).

Almost surely, 2^47779219 is an apocalyptic number.

47779219 is a deficient number, since it is larger than the sum of its proper divisors (1).

47779219 is an equidigital number, since it uses as much as digits as its factorization.

47779219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 222264, while the sum is 46.

The square root of 47779219 is about 6912.2513698505. The cubic root of 47779219 is about 362.8660597099.

The spelling of 47779219 in words is "forty-seven million, seven hundred seventy-nine thousand, two hundred nineteen".