270306989 has 2 divisors, whose sum is σ = 270306990. Its totient is φ = 270306988.

The previous prime is 270306979. The next prime is 270306991. The reversal of 270306989 is 989603072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 140232964 + 130074025 = 11842^2 + 11405^2 .

It is a cyclic number.

It is not a de Polignac number, because 270306989 - 2⁸ = 270306733 is a prime.

It is a super-2 number, since 2×270306989² = 146131736604492242, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 270306991, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (270306979) 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, 135153494 + 135153495.

It is an arithmetic number, because the mean of its divisors is an integer number (135153495).

Almost surely, 2^270306989 is an apocalyptic number.

It is an amenable number.

270306989 is a deficient number, since it is larger than the sum of its proper divisors (1).

270306989 is an equidigital number, since it uses as much as digits as its factorization.

270306989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 270306989 is about 16441.0154491747. The cubic root of 270306989 is about 646.5752726555.

The spelling of 270306989 in words is "two hundred seventy million, three hundred six thousand, nine hundred eighty-nine".