30949717 has 2 divisors, whose sum is σ = 30949718. Its totient is φ = 30949716.

The previous prime is 30949663. The next prime is 30949747. The reversal of 30949717 is 71794903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16273156 + 14676561 = 4034^2 + 3831^2 .

It is a cyclic number.

It is not a de Polignac number, because 30949717 - 2¹⁹ = 30425429 is a prime.

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 30949717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30949747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15474858 + 15474859.

It is an arithmetic number, because the mean of its divisors is an integer number (15474859).

Almost surely, 2^30949717 is an apocalyptic number.

It is an amenable number.

30949717 is a deficient number, since it is larger than the sum of its proper divisors (1).

30949717 is an equidigital number, since it uses as much as digits as its factorization.

30949717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 30949717 is about 5563.2469835520. The cubic root of 30949717 is about 313.9681259652.

The spelling of 30949717 in words is "thirty million, nine hundred forty-nine thousand, seven hundred seventeen".