30447449 has 2 divisors, whose sum is σ = 30447450. Its totient is φ = 30447448.

The previous prime is 30447437. The next prime is 30447451. The reversal of 30447449 is 94474403.

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., 27489049 + 2958400 = 5243^2 + 1720^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30447449 is a prime.

Together with 30447451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30447409) 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, 15223724 + 15223725.

It is an arithmetic number, because the mean of its divisors is an integer number (15223725).

Almost surely, 2^30447449 is an apocalyptic number.

It is an amenable number.

30447449 is a deficient number, since it is larger than the sum of its proper divisors (1).

30447449 is an equidigital number, since it uses as much as digits as its factorization.

30447449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 35.

The square root of 30447449 is about 5517.9207134572. The cubic root of 30447449 is about 312.2604423257.

The spelling of 30447449 in words is "thirty million, four hundred forty-seven thousand, four hundred forty-nine".