27030989 has 2 divisors, whose sum is σ = 27030990. Its totient is φ = 27030988.

The previous prime is 27030973. The next prime is 27031021. The reversal of 27030989 is 98903072.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24581764 + 2449225 = 4958^2 + 1565^2 .

It is a cyclic number.

It is not a de Polignac number, because 27030989 - 2⁴ = 27030973 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27030959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13515494 + 13515495.

It is an arithmetic number, because the mean of its divisors is an integer number (13515495).

Almost surely, 2^27030989 is an apocalyptic number.

It is an amenable number.

27030989 is a deficient number, since it is larger than the sum of its proper divisors (1).

27030989 is an equidigital number, since it uses as much as digits as its factorization.

27030989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 27030989 is about 5199.1334854954. The cubic root of 27030989 is about 300.1147301918.

The spelling of 27030989 in words is "twenty-seven million, thirty thousand, nine hundred eighty-nine".