27342989 has 2 divisors, whose sum is σ = 27342990. Its totient is φ = 27342988.

The previous prime is 27342983. The next prime is 27343003. The reversal of 27342989 is 98924372.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16564900 + 10778089 = 4070^2 + 3283^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27342989 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27342983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13671494 + 13671495.

It is an arithmetic number, because the mean of its divisors is an integer number (13671495).

Almost surely, 2^27342989 is an apocalyptic number.

It is an amenable number.

27342989 is a deficient number, since it is larger than the sum of its proper divisors (1).

27342989 is an equidigital number, since it uses as much as digits as its factorization.

27342989 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 44.

The square root of 27342989 is about 5229.0523998139. The cubic root of 27342989 is about 301.2649881491.

The spelling of 27342989 in words is "twenty-seven million, three hundred forty-two thousand, nine hundred eighty-nine".