999241219 has 2 divisors, whose sum is σ = 999241220. Its totient is φ = 999241218.

The previous prime is 999241211. The next prime is 999241241. The reversal of 999241219 is 912142999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 999241219 - 2³ = 999241211 is a prime.

It is a super-2 number, since 2×999241219² = 1996966027497211922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (999241211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499620609 + 499620610.

It is an arithmetic number, because the mean of its divisors is an integer number (499620610).

Almost surely, 2^999241219 is an apocalyptic number.

999241219 is a deficient number, since it is larger than the sum of its proper divisors (1).

999241219 is an equidigital number, since it uses as much as digits as its factorization.

999241219 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 46.

The square root of 999241219 is about 31610.7769439475. The cubic root of 999241219 is about 999.7470090010.

The spelling of 999241219 in words is "nine hundred ninety-nine million, two hundred forty-one thousand, two hundred nineteen".