27420439 has 16 divisors (see below), whose sum is σ = 31898880. Its totient is φ = 23379840.

The previous prime is 27420433. The next prime is 27420469. The reversal of 27420439 is 93402472.

It is a cyclic number.

It is not a de Polignac number, because 27420439 - 2⁷ = 27420311 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 27420439.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27420433) 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 15 ways as a sum of consecutive naturals, for example, 5584 + ... + 9274.

It is an arithmetic number, because the mean of its divisors is an integer number (1993680).

Almost surely, 2^27420439 is an apocalyptic number.

27420439 is a deficient number, since it is larger than the sum of its proper divisors (4478441).

27420439 is a wasteful number, since it uses less digits than its factorization.

27420439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3750.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 27420439 is about 5236.4529024904. The cubic root of 27420439 is about 301.5491679735.

The spelling of 27420439 in words is "twenty-seven million, four hundred twenty thousand, four hundred thirty-nine".