27319489 has 4 divisors (see below), whose sum is σ = 27985860. Its totient is φ = 26653120.

The previous prime is 27319429. The next prime is 27319499. The reversal of 27319489 is 98491372.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 693889 + 26625600 = 833^2 + 5160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27319489 is a prime.

It is a super-2 number, since 2×27319489² = 1492708958442242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27319429) 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 3 ways as a sum of consecutive naturals, for example, 333124 + ... + 333205.

It is an arithmetic number, because the mean of its divisors is an integer number (6996465).

Almost surely, 2^27319489 is an apocalyptic number.

It is an amenable number.

27319489 is a deficient number, since it is larger than the sum of its proper divisors (666371).

27319489 is an equidigital number, since it uses as much as digits as its factorization.

27319489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666370.

The product of its digits is 108864, while the sum is 43.

The square root of 27319489 is about 5226.8048557412. The cubic root of 27319489 is about 301.1786557634.

The spelling of 27319489 in words is "twenty-seven million, three hundred nineteen thousand, four hundred eighty-nine".