27342389 has 6 divisors (see below), whose sum is σ = 28314390. Its totient is φ = 26372360.

The previous prime is 27342379. The next prime is 27342407. The reversal of 27342389 is 98324372.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 23571025 + 3771364 = 4855^2 + 1942^2 .

It is not a de Polignac number, because 27342389 - 2⁴ = 27342373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27342319) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 27674 + ... + 28644.

It is an arithmetic number, because the mean of its divisors is an integer number (4719065).

Almost surely, 2^27342389 is an apocalyptic number.

27342389 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

27342389 is a deficient number, since it is larger than the sum of its proper divisors (972001).

27342389 is an frugal number, since it uses more digits than its factorization.

27342389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1971 (or 1000 counting only the distinct ones).

The product of its digits is 72576, while the sum is 38.

The square root of 27342389 is about 5228.9950277276. The cubic root of 27342389 is about 301.2627845335.

The spelling of 27342389 in words is "twenty-seven million, three hundred forty-two thousand, three hundred eighty-nine".