30489169 has 2 divisors, whose sum is σ = 30489170. Its totient is φ = 30489168.

The previous prime is 30489163. The next prime is 30489187. The reversal of 30489169 is 96198403.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30470400 + 18769 = 5520^2 + 137^2 .

It is a cyclic number.

It is not a de Polignac number, because 30489169 - 2³ = 30489161 is a prime.

It is a super-2 number, since 2×30489169² = 1859178852621122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (30489161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15244584 + 15244585.

It is an arithmetic number, because the mean of its divisors is an integer number (15244585).

Almost surely, 2^30489169 is an apocalyptic number.

It is an amenable number.

30489169 is a deficient number, since it is larger than the sum of its proper divisors (1).

30489169 is an equidigital number, since it uses as much as digits as its factorization.

30489169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 30489169 is about 5521.6998288571. The cubic root of 30489169 is about 312.4030000810.

The spelling of 30489169 in words is "thirty million, four hundred eighty-nine thousand, one hundred sixty-nine".