27144789 has 8 divisors (see below), whose sum is σ = 41363520. Its totient is φ = 15511296.

The previous prime is 27144773. The next prime is 27144833. The reversal of 27144789 is 98744172.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27144789 - 2⁴ = 27144773 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27144789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27144289) 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 in 7 ways as a sum of consecutive naturals, for example, 646284 + ... + 646325.

It is an arithmetic number, because the mean of its divisors is an integer number (5170440).

Almost surely, 2^27144789 is an apocalyptic number.

It is an amenable number.

27144789 is a deficient number, since it is larger than the sum of its proper divisors (14218731).

27144789 is a wasteful number, since it uses less digits than its factorization.

27144789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1292619.

The product of its digits is 112896, while the sum is 42.

The square root of 27144789 is about 5210.0661224211. The cubic root of 27144789 is about 300.5352998344.

It can be divided in two parts, 2714 and 4789, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 27144789 in words is "twenty-seven million, one hundred forty-four thousand, seven hundred eighty-nine".