30380689 has 2 divisors, whose sum is σ = 30380690. Its totient is φ = 30380688.

The previous prime is 30380641. The next prime is 30380711. The reversal of 30380689 is 98608303.

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., 29246464 + 1134225 = 5408^2 + 1065^2 .

It is a cyclic number.

It is not a de Polignac number, because 30380689 - 2¹¹ = 30378641 is a prime.

It is a super-2 number, since 2×30380689² = 1845972528229442, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (30386689) 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, 15190344 + 15190345.

It is an arithmetic number, because the mean of its divisors is an integer number (15190345).

Almost surely, 2^30380689 is an apocalyptic number.

It is an amenable number.

30380689 is a deficient number, since it is larger than the sum of its proper divisors (1).

30380689 is an equidigital number, since it uses as much as digits as its factorization.

30380689 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 30380689 is about 5511.8680136593. The cubic root of 30380689 is about 312.0320514136.

The spelling of 30380689 in words is "thirty million, three hundred eighty thousand, six hundred eighty-nine".