30849197 has 2 divisors, whose sum is σ = 30849198. Its totient is φ = 30849196.

The previous prime is 30849173. The next prime is 30849209. The reversal of 30849197 is 79194803.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29658916 + 1190281 = 5446^2 + 1091^2 .

It is an emirp because it is prime and its reverse (79194803) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30849197 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30849107) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15424598 + 15424599.

It is an arithmetic number, because the mean of its divisors is an integer number (15424599).

Almost surely, 2^30849197 is an apocalyptic number.

It is an amenable number.

30849197 is a deficient number, since it is larger than the sum of its proper divisors (1).

30849197 is an equidigital number, since it uses as much as digits as its factorization.

30849197 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 30849197 is about 5554.2053437013. The cubic root of 30849197 is about 313.6278503147.

The spelling of 30849197 in words is "thirty million, eight hundred forty-nine thousand, one hundred ninety-seven".