30946009 has 2 divisors, whose sum is σ = 30946010. Its totient is φ = 30946008.

The previous prime is 30945991. The next prime is 30946043. The reversal of 30946009 is 90064903.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 25200400 + 5745609 = 5020^2 + 2397^2 .

It is an emirp because it is prime and its reverse (90064903) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30946009 - 2⁵ = 30945977 is a prime.

It is not a weakly prime, because it can be changed into another prime (30946049) 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, 15473004 + 15473005.

It is an arithmetic number, because the mean of its divisors is an integer number (15473005).

Almost surely, 2^30946009 is an apocalyptic number.

It is an amenable number.

30946009 is a deficient number, since it is larger than the sum of its proper divisors (1).

30946009 is an equidigital number, since it uses as much as digits as its factorization.

30946009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 31.

The square root of 30946009 is about 5562.9137149519. The cubic root of 30946009 is about 313.9555869135.

The spelling of 30946009 in words is "thirty million, nine hundred forty-six thousand, nine".