27889039 has 4 divisors (see below), whose sum is σ = 28850760. Its totient is φ = 26927320.

The previous prime is 27889033. The next prime is 27889051. The reversal of 27889039 is 93098872.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 27889039 - 2⁵ = 27889007 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27889039.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27889033) 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, 480817 + ... + 480874.

It is an arithmetic number, because the mean of its divisors is an integer number (7212690).

Almost surely, 2^27889039 is an apocalyptic number.

27889039 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

27889039 is a deficient number, since it is larger than the sum of its proper divisors (961721).

27889039 is an equidigital number, since it uses as much as digits as its factorization.

27889039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961720.

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 27889039 is about 5281.0073849598. The cubic root of 27889039 is about 303.2572435911.

The spelling of 27889039 in words is "twenty-seven million, eight hundred eighty-nine thousand, thirty-nine".