30809369 has 2 divisors, whose sum is σ = 30809370. Its totient is φ = 30809368.

The previous prime is 30809333. The next prime is 30809411. The reversal of 30809369 is 96390803.

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., 24880144 + 5929225 = 4988^2 + 2435^2 .

It is an emirp because it is prime and its reverse (96390803) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30809369 - 2¹² = 30805273 is a prime.

It is a super-2 number, since 2×30809369² = 1898434436356322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30809309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15404684 + 15404685.

It is an arithmetic number, because the mean of its divisors is an integer number (15404685).

Almost surely, 2^30809369 is an apocalyptic number.

It is an amenable number.

30809369 is a deficient number, since it is larger than the sum of its proper divisors (1).

30809369 is an equidigital number, since it uses as much as digits as its factorization.

30809369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 30809369 is about 5550.6187943328. The cubic root of 30809369 is about 313.4928219543.

The spelling of 30809369 in words is "thirty million, eight hundred nine thousand, three hundred sixty-nine".