30139999 has 2 divisors, whose sum is σ = 30140000. Its totient is φ = 30139998.

The previous prime is 30139981. The next prime is 30140041. The reversal of 30139999 is 99993103.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30139999 - 2¹³ = 30131807 is a prime.

30139999 is a modest number, since divided by 9999 gives 3013 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30139199) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15069999 + 15070000.

It is an arithmetic number, because the mean of its divisors is an integer number (15070000).

Almost surely, 2^30139999 is an apocalyptic number.

30139999 is a deficient number, since it is larger than the sum of its proper divisors (1).

30139999 is an equidigital number, since it uses as much as digits as its factorization.

30139999 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 30139999 is about 5489.9908014495. The cubic root of 30139999 is about 311.2058445020.

The spelling of 30139999 in words is "thirty million, one hundred thirty-nine thousand, nine hundred ninety-nine".