27408313 has 2 divisors, whose sum is σ = 27408314. Its totient is φ = 27408312.

The previous prime is 27408253. The next prime is 27408331. The reversal of 27408313 is 31380472.

Together with next prime (27408331) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22581504 + 4826809 = 4752^2 + 2197^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27408313 is a prime.

It is not a weakly prime, because it can be changed into another prime (27408373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13704156 + 13704157.

It is an arithmetic number, because the mean of its divisors is an integer number (13704157).

Almost surely, 2^27408313 is an apocalyptic number.

It is an amenable number.

27408313 is a deficient number, since it is larger than the sum of its proper divisors (1).

27408313 is an equidigital number, since it uses as much as digits as its factorization.

27408313 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 27408313 is about 5235.2949296100. The cubic root of 27408313 is about 301.5047105725.

Adding to 27408313 its reverse (31380472), we get a palindrome (58788785).

The spelling of 27408313 in words is "twenty-seven million, four hundred eight thousand, three hundred thirteen".