27439985 has 8 divisors (see below), whose sum is σ = 32956200. Its totient is φ = 21933184.

The previous prime is 27439961. The next prime is 27439999. The reversal of 27439985 is 58993472.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2719201 + 24720784 = 1649^2 + 4972^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 27439985 - 2¹⁶ = 27374449 is a prime.

It is an unprimeable number.

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, 9491 + ... + 12039.

It is an arithmetic number, because the mean of its divisors is an integer number (4119525).

Almost surely, 2^27439985 is an apocalyptic number.

It is an amenable number.

27439985 is a deficient number, since it is larger than the sum of its proper divisors (5516215).

27439985 is a wasteful number, since it uses less digits than its factorization.

27439985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4707.

The product of its digits is 544320, while the sum is 47.

The square root of 27439985 is about 5238.3189097267. The cubic root of 27439985 is about 301.6208016444.

The spelling of 27439985 in words is "twenty-seven million, four hundred thirty-nine thousand, nine hundred eighty-five".