30330409 has 2 divisors, whose sum is σ = 30330410. Its totient is φ = 30330408.

The previous prime is 30330407. The next prime is 30330413. The reversal of 30330409 is 90403303.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 12054784 = 4275^2 + 3472^2 .

It is an emirp because it is prime and its reverse (90403303) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30330409 - 2¹ = 30330407 is a prime.

Together with 30330407, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30330409.

It is not a weakly prime, because it can be changed into another prime (30330407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15165204 + 15165205.

It is an arithmetic number, because the mean of its divisors is an integer number (15165205).

Almost surely, 2^30330409 is an apocalyptic number.

It is an amenable number.

30330409 is a deficient number, since it is larger than the sum of its proper divisors (1).

30330409 is an equidigital number, since it uses as much as digits as its factorization.

30330409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 972, while the sum is 22.

The square root of 30330409 is about 5507.3050578300. The cubic root of 30330409 is about 311.8598188200.

The spelling of 30330409 in words is "thirty million, three hundred thirty thousand, four hundred nine".