30129089 has 2 divisors, whose sum is σ = 30129090. Its totient is φ = 30129088.

The previous prime is 30129053. The next prime is 30129091. The reversal of 30129089 is 98092103.

30129089 is nontrivially palindromic in base 16.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 28729600 + 1399489 = 5360^2 + 1183^2 .

It is an emirp because it is prime and its reverse (98092103) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30129089 is a prime.

Together with 30129091, 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 (30129019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15064544 + 15064545.

It is an arithmetic number, because the mean of its divisors is an integer number (15064545).

Almost surely, 2^30129089 is an apocalyptic number.

It is an amenable number.

30129089 is a deficient number, since it is larger than the sum of its proper divisors (1).

30129089 is an equidigital number, since it uses as much as digits as its factorization.

30129089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 30129089 is about 5488.9970850785. The cubic root of 30129089 is about 311.1682901376.

Adding to 30129089 its sum of digits (32), we get a square (30129121 = 5489²).

The spelling of 30129089 in words is "thirty million, one hundred twenty-nine thousand, eighty-nine".