30706409 has 2 divisors, whose sum is σ = 30706410. Its totient is φ = 30706408.

The previous prime is 30706397. The next prime is 30706433. The reversal of 30706409 is 90460703.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29463184 + 1243225 = 5428^2 + 1115^2 .

It is a cyclic number.

It is not a de Polignac number, because 30706409 - 2⁴ = 30706393 is a prime.

It is not a weakly prime, because it can be changed into another prime (30702409) 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, 15353204 + 15353205.

It is an arithmetic number, because the mean of its divisors is an integer number (15353205).

Almost surely, 2^30706409 is an apocalyptic number.

It is an amenable number.

30706409 is a deficient number, since it is larger than the sum of its proper divisors (1).

30706409 is an equidigital number, since it uses as much as digits as its factorization.

30706409 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 29.

The square root of 30706409 is about 5541.3363911605. The cubic root of 30706409 is about 313.1432178781.

The spelling of 30706409 in words is "thirty million, seven hundred six thousand, four hundred nine".