27739917 has 12 divisors (see below), whose sum is σ = 40921920. Its totient is φ = 18099528.

The previous prime is 27739891. The next prime is 27739919. The reversal of 27739917 is 71993772.

It is not a de Polignac number, because 27739917 - 2¹² = 27735821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27739919) 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 11 ways as a sum of consecutive naturals, for example, 32367 + ... + 33212.

It is an arithmetic number, because the mean of its divisors is an integer number (3410160).

Almost surely, 2^27739917 is an apocalyptic number.

It is an amenable number.

27739917 is a deficient number, since it is larger than the sum of its proper divisors (13182003).

27739917 is a wasteful number, since it uses less digits than its factorization.

27739917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65632 (or 65629 counting only the distinct ones).

The product of its digits is 166698, while the sum is 45.

The square root of 27739917 is about 5266.8697534684. The cubic root of 27739917 is about 302.7157743799.

The spelling of 27739917 in words is "twenty-seven million, seven hundred thirty-nine thousand, nine hundred seventeen".