27889421 has 8 divisors (see below), whose sum is σ = 31920000. Its totient is φ = 23870448.

The previous prime is 27889399. The next prime is 27889427. The reversal of 27889421 is 12498872.

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

It is not a de Polignac number, because 27889421 - 2⁶ = 27889357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27889427) 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 7 ways as a sum of consecutive naturals, for example, 3080 + ... + 8078.

It is an arithmetic number, because the mean of its divisors is an integer number (3990000).

Almost surely, 2^27889421 is an apocalyptic number.

It is an amenable number.

27889421 is a deficient number, since it is larger than the sum of its proper divisors (4030579).

27889421 is an equidigital number, since it uses as much as digits as its factorization.

27889421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5803.

The product of its digits is 64512, while the sum is 41.

The square root of 27889421 is about 5281.0435521779. The cubic root of 27889421 is about 303.2586281702.

The spelling of 27889421 in words is "twenty-seven million, eight hundred eighty-nine thousand, four hundred twenty-one".