49981219 has 2 divisors, whose sum is σ = 49981220. Its totient is φ = 49981218.

The previous prime is 49981199. The next prime is 49981237. The reversal of 49981219 is 91218994.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 49981219 - 2²³ = 41592611 is a prime.

It is a super-2 number, since 2×49981219² = 4996244505451922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (49981249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24990609 + 24990610.

It is an arithmetic number, because the mean of its divisors is an integer number (24990610).

Almost surely, 2^49981219 is an apocalyptic number.

49981219 is a deficient number, since it is larger than the sum of its proper divisors (1).

49981219 is an equidigital number, since it uses as much as digits as its factorization.

49981219 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 46656, while the sum is 43.

The square root of 49981219 is about 7069.7396698888. The cubic root of 49981219 is about 368.3570175571.

It can be divided in two parts, 499 and 81219, that added together give a palindrome (81718).

The spelling of 49981219 in words is "forty-nine million, nine hundred eighty-one thousand, two hundred nineteen".