30508949 has 2 divisors, whose sum is σ = 30508950. Its totient is φ = 30508948.

The previous prime is 30508937. The next prime is 30508993. The reversal of 30508949 is 94980503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29052100 + 1456849 = 5390^2 + 1207^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30508949 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30508349) 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, 15254474 + 15254475.

It is an arithmetic number, because the mean of its divisors is an integer number (15254475).

Almost surely, 2^30508949 is an apocalyptic number.

It is an amenable number.

30508949 is a deficient number, since it is larger than the sum of its proper divisors (1).

30508949 is an equidigital number, since it uses as much as digits as its factorization.

30508949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 38.

The square root of 30508949 is about 5523.4906535632. The cubic root of 30508949 is about 312.4705431434.

The spelling of 30508949 in words is "thirty million, five hundred eight thousand, nine hundred forty-nine".