27679869 has 24 divisors (see below), whose sum is σ = 47171072. Its totient is φ = 15305760.

The previous prime is 27679849. The next prime is 27679871. The reversal of 27679869 is 96897672.

It is not a de Polignac number, because 27679869 - 2¹¹ = 27677821 is a prime.

It is a super-2 number, since 2×27679869² = 1532350295714322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27679829) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5134 + ... + 9039.

Almost surely, 2^27679869 is an apocalyptic number.

It is an amenable number.

27679869 is a deficient number, since it is larger than the sum of its proper divisors (19491203).

27679869 is a wasteful number, since it uses less digits than its factorization.

27679869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14217 (or 14214 counting only the distinct ones).

The product of its digits is 2286144, while the sum is 54.

The square root of 27679869 is about 5261.1661254897. The cubic root of 27679869 is about 302.4971891458.

The spelling of 27679869 in words is "twenty-seven million, six hundred seventy-nine thousand, eight hundred sixty-nine".