27434389 has 4 divisors (see below), whose sum is σ = 27457056. Its totient is φ = 27411724.

The previous prime is 27434383. The next prime is 27434401. The reversal of 27434389 is 98343472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27434389 - 2¹⁹ = 26910101 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27434383) 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 3 ways as a sum of consecutive naturals, for example, 9409 + ... + 11974.

It is an arithmetic number, because the mean of its divisors is an integer number (6864264).

Almost surely, 2^27434389 is an apocalyptic number.

It is an amenable number.

27434389 is a deficient number, since it is larger than the sum of its proper divisors (22667).

27434389 is a wasteful number, since it uses less digits than its factorization.

27434389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22666.

The product of its digits is 145152, while the sum is 40.

The square root of 27434389 is about 5237.7847416632. The cubic root of 27434389 is about 301.6002964733.

The spelling of 27434389 in words is "twenty-seven million, four hundred thirty-four thousand, three hundred eighty-nine".