30944489 has 2 divisors, whose sum is σ = 30944490. Its totient is φ = 30944488.

The previous prime is 30944461. The next prime is 30944491. The reversal of 30944489 is 98444903.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25836889 + 5107600 = 5083^2 + 2260^2 .

It is a cyclic number.

It is not a de Polignac number, because 30944489 - 2²⁰ = 29895913 is a prime.

It is a super-2 number, since 2×30944489² = 1915122798942242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 30944491, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (30944449) 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, 15472244 + 15472245.

It is an arithmetic number, because the mean of its divisors is an integer number (15472245).

Almost surely, 2^30944489 is an apocalyptic number.

It is an amenable number.

30944489 is a deficient number, since it is larger than the sum of its proper divisors (1).

30944489 is an equidigital number, since it uses as much as digits as its factorization.

30944489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 30944489 is about 5562.7770942219. Note that the first 3 decimals coincide. The cubic root of 30944489 is about 313.9504465597.

The spelling of 30944489 in words is "thirty million, nine hundred forty-four thousand, four hundred eighty-nine".