30399999 has 16 divisors (see below), whose sum is σ = 46978560. Its totient is φ = 17125920.

The previous prime is 30399973. The next prime is 30400003. The reversal of 30399999 is 99999303.

It is not a de Polignac number, because 30399999 - 2¹⁵ = 30367231 is a prime.

30399999 is a modest number, since divided by 9999 gives 3039 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30399199) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8704 + ... + 11685.

It is an arithmetic number, because the mean of its divisors is an integer number (2936160).

Almost surely, 2^30399999 is an apocalyptic number.

30399999 is a deficient number, since it is larger than the sum of its proper divisors (16578561).

30399999 is a wasteful number, since it uses less digits than its factorization.

30399999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20470.

The product of its (nonzero) digits is 531441, while the sum is 51.

The square root of 30399999 is about 5513.6194101516. The cubic root of 30399999 is about 312.0981467194.

The spelling of 30399999 in words is "thirty million, three hundred ninety-nine thousand, nine hundred ninety-nine".