30805417 has 2 divisors, whose sum is σ = 30805418. Its totient is φ = 30805416.

The previous prime is 30805393. The next prime is 30805421. The reversal of 30805417 is 71450803.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19855936 + 10949481 = 4456^2 + 3309^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30805417 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30805477) 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, 15402708 + 15402709.

It is an arithmetic number, because the mean of its divisors is an integer number (15402709).

Almost surely, 2^30805417 is an apocalyptic number.

It is an amenable number.

30805417 is a deficient number, since it is larger than the sum of its proper divisors (1).

30805417 is an equidigital number, since it uses as much as digits as its factorization.

30805417 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 30805417 is about 5550.2627865715. The cubic root of 30805417 is about 313.4794171941.

The spelling of 30805417 in words is "thirty million, eight hundred five thousand, four hundred seventeen".