30641489 has 2 divisors, whose sum is σ = 30641490. Its totient is φ = 30641488.

The previous prime is 30641477. The next prime is 30641491. The reversal of 30641489 is 98414603.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20611600 + 10029889 = 4540^2 + 3167^2 .

It is a cyclic number.

It is not a de Polignac number, because 30641489 - 2¹⁶ = 30575953 is a prime.

Together with 30641491, 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 (30641449) 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, 15320744 + 15320745.

It is an arithmetic number, because the mean of its divisors is an integer number (15320745).

Almost surely, 2^30641489 is an apocalyptic number.

It is an amenable number.

30641489 is a deficient number, since it is larger than the sum of its proper divisors (1).

30641489 is an equidigital number, since it uses as much as digits as its factorization.

30641489 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 30641489 is about 5535.4754989974. The cubic root of 30641489 is about 312.9223779727.

The spelling of 30641489 in words is "thirty million, six hundred forty-one thousand, four hundred eighty-nine".