99980219 has 2 divisors, whose sum is σ = 99980220. Its totient is φ = 99980218.

The previous prime is 99980189. The next prime is 99980291. The reversal of 99980219 is 91208999.

Together with next prime (99980291) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99980219 - 2⁸ = 99979963 is a prime.

It is a super-2 number, since 2×99980219² = 19992088382575922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (99985219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49990109 + 49990110.

It is an arithmetic number, because the mean of its divisors is an integer number (49990110).

Almost surely, 2^99980219 is an apocalyptic number.

99980219 is a deficient number, since it is larger than the sum of its proper divisors (1).

99980219 is an equidigital number, since it uses as much as digits as its factorization.

99980219 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 104976, while the sum is 47.

The square root of 99980219 is about 9999.0109010842. The cubic root of 99980219 is about 464.1282762535.

It can be divided in two parts, 999 and 80219, that added together give a palindrome (81218).

The spelling of 99980219 in words is "ninety-nine million, nine hundred eighty thousand, two hundred nineteen".