27009489 has 32 divisors (see below), whose sum is σ = 40279680. Its totient is φ = 15994368.

The previous prime is 27009473. The next prime is 27009491. The reversal of 27009489 is 98490072.

It is not a de Polignac number, because 27009489 - 2⁴ = 27009473 is a prime.

It is a super-2 number, since 2×27009489² = 1459024992082242, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (27009989) 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 in 31 ways as a sum of consecutive naturals, for example, 150802 + ... + 150980.

It is an arithmetic number, because the mean of its divisors is an integer number (1258740).

Almost surely, 2^27009489 is an apocalyptic number.

It is an amenable number.

27009489 is a deficient number, since it is larger than the sum of its proper divisors (13270191).

27009489 is a wasteful number, since it uses less digits than its factorization.

27009489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 36288, while the sum is 39.

The square root of 27009489 is about 5197.0654219473. The cubic root of 27009489 is about 300.0351403281.

The spelling of 27009489 in words is "twenty-seven million, nine thousand, four hundred eighty-nine".