49780219 has 2 divisors, whose sum is σ = 49780220. Its totient is φ = 49780218.

The previous prime is 49780189. The next prime is 49780223. The reversal of 49780219 is 91208794.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49780219 - 2⁵ = 49780187 is a prime.

It is a super-2 number, since 2×49780219² = 4956140407375922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49780259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24890109 + 24890110.

It is an arithmetic number, because the mean of its divisors is an integer number (24890110).

Almost surely, 2^49780219 is an apocalyptic number.

49780219 is a deficient number, since it is larger than the sum of its proper divisors (1).

49780219 is an equidigital number, since it uses as much as digits as its factorization.

49780219 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288, while the sum is 40.

The square root of 49780219 is about 7055.5098327477. The cubic root of 49780219 is about 367.8625702766.

The spelling of 49780219 in words is "forty-nine million, seven hundred eighty thousand, two hundred nineteen".