30199999 has 2 divisors, whose sum is σ = 30200000. Its totient is φ = 30199998.

The previous prime is 30199997. The next prime is 30200003. The reversal of 30199999 is 99999103.

It is a weak prime.

It is an emirp because it is prime and its reverse (99999103) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30199999 - 2¹ = 30199997 is a prime.

Together with 30199997, it forms a pair of twin primes.

30199999 is a modest number, since divided by 9999 gives 3019 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30199997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15099999 + 15100000.

It is an arithmetic number, because the mean of its divisors is an integer number (15100000).

Almost surely, 2^30199999 is an apocalyptic number.

30199999 is a deficient number, since it is larger than the sum of its proper divisors (1).

30199999 is an equidigital number, since it uses as much as digits as its factorization.

30199999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 177147, while the sum is 49.

The square root of 30199999 is about 5495.4525746293. The cubic root of 30199999 is about 311.4122144928.

The spelling of 30199999 in words is "thirty million, one hundred ninety-nine thousand, nine hundred ninety-nine".