30868399 has 2 divisors, whose sum is σ = 30868400. Its totient is φ = 30868398.

The previous prime is 30868393. The next prime is 30868403. The reversal of 30868399 is 99386803.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 30868399 - 2³ = 30868391 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30868391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15434199 + 15434200.

It is an arithmetic number, because the mean of its divisors is an integer number (15434200).

Almost surely, 2^30868399 is an apocalyptic number.

30868399 is a deficient number, since it is larger than the sum of its proper divisors (1).

30868399 is an equidigital number, since it uses as much as digits as its factorization.

30868399 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 30868399 is about 5555.9336749101. The cubic root of 30868399 is about 313.6929090897.

The spelling of 30868399 in words is "thirty million, eight hundred sixty-eight thousand, three hundred ninety-nine".