30340789 has 2 divisors, whose sum is σ = 30340790. Its totient is φ = 30340788.

The previous prime is 30340753. The next prime is 30340823. The reversal of 30340789 is 98704303.

It is an a-pointer prime, because the next prime (30340823) can be obtained adding 30340789 to its sum of digits (34).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26440164 + 3900625 = 5142^2 + 1975^2 .

It is an emirp because it is prime and its reverse (98704303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30340789 - 2²³ = 21952181 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30340489) 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, 15170394 + 15170395.

It is an arithmetic number, because the mean of its divisors is an integer number (15170395).

Almost surely, 2^30340789 is an apocalyptic number.

It is an amenable number.

30340789 is a deficient number, since it is larger than the sum of its proper divisors (1).

30340789 is an equidigital number, since it uses as much as digits as its factorization.

30340789 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 30340789 is about 5508.2473619110. The cubic root of 30340789 is about 311.8953907737.

The spelling of 30340789 in words is "thirty million, three hundred forty thousand, seven hundred eighty-nine".