30338993 has 2 divisors, whose sum is σ = 30338994. Its totient is φ = 30338992.

The previous prime is 30338977. The next prime is 30339041. The reversal of 30338993 is 39983303.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27804529 + 2534464 = 5273^2 + 1592^2 .

It is a cyclic number.

It is not a de Polignac number, because 30338993 - 2⁴ = 30338977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30338963) 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, 15169496 + 15169497.

It is an arithmetic number, because the mean of its divisors is an integer number (15169497).

Almost surely, 2^30338993 is an apocalyptic number.

It is an amenable number.

30338993 is a deficient number, since it is larger than the sum of its proper divisors (1).

30338993 is an equidigital number, since it uses as much as digits as its factorization.

30338993 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52488, while the sum is 38.

The square root of 30338993 is about 5508.0843312353. The cubic root of 30338993 is about 311.8892365152.

The spelling of 30338993 in words is "thirty million, three hundred thirty-eight thousand, nine hundred ninety-three".