999612619 has 2 divisors, whose sum is σ = 999612620. Its totient is φ = 999612618.

The previous prime is 999612617. The next prime is 999612671. The reversal of 999612619 is 916216999.

It is an a-pointer prime, because the next prime (999612671) can be obtained adding 999612619 to its sum of digits (52).

It is a weak prime.

It is an emirp because it is prime and its reverse (916216999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999612619 - 2¹ = 999612617 is a prime.

It is a super-2 number, since 2×999612619² = 1998450776128078322, which contains 22 as substring.

Together with 999612617, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (999612611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499806309 + 499806310.

It is an arithmetic number, because the mean of its divisors is an integer number (499806310).

Almost surely, 2^999612619 is an apocalyptic number.

999612619 is a deficient number, since it is larger than the sum of its proper divisors (1).

999612619 is an equidigital number, since it uses as much as digits as its factorization.

999612619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 472392, while the sum is 52.

The square root of 999612619 is about 31616.6509769773. The cubic root of 999612619 is about 999.8708563226.

The spelling of 999612619 in words is "nine hundred ninety-nine million, six hundred twelve thousand, six hundred nineteen".