30149689 has 2 divisors, whose sum is σ = 30149690. Its totient is φ = 30149688.

The previous prime is 30149671. The next prime is 30149699. The reversal of 30149689 is 98694103.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23814400 + 6335289 = 4880^2 + 2517^2 .

It is a cyclic number.

It is not a de Polignac number, because 30149689 - 2¹⁵ = 30116921 is a prime.

It is not a weakly prime, because it can be changed into another prime (30149629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15074844 + 15074845.

It is an arithmetic number, because the mean of its divisors is an integer number (15074845).

Almost surely, 2^30149689 is an apocalyptic number.

It is an amenable number.

30149689 is a deficient number, since it is larger than the sum of its proper divisors (1).

30149689 is an equidigital number, since it uses as much as digits as its factorization.

30149689 is an odious number, because the sum of its binary digits is odd.

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

The square root of 30149689 is about 5490.8732456687. The cubic root of 30149689 is about 311.2391917883.

The spelling of 30149689 in words is "thirty million, one hundred forty-nine thousand, six hundred eighty-nine".