27379985 has 4 divisors (see below), whose sum is σ = 32855988. Its totient is φ = 21903984.

The previous prime is 27379981. The next prime is 27379987. The reversal of 27379985 is 58997372.

It is a happy number.

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 19855936 + 7524049 = 4456^2 + 2743^2 .

It is a cyclic number.

It is not a de Polignac number, because 27379985 - 2² = 27379981 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27379981) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2737994 + ... + 2738003.

It is an arithmetic number, because the mean of its divisors is an integer number (8213997).

Almost surely, 2^27379985 is an apocalyptic number.

It is an amenable number.

27379985 is a deficient number, since it is larger than the sum of its proper divisors (5476003).

27379985 is an equidigital number, since it uses as much as digits as its factorization.

27379985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5476002.

The product of its digits is 952560, while the sum is 50.

The square root of 27379985 is about 5232.5887474557. The cubic root of 27379985 is about 301.4008008613.

The spelling of 27379985 in words is "twenty-seven million, three hundred seventy-nine thousand, nine hundred eighty-five".