27398863 has 2 divisors, whose sum is σ = 27398864. Its totient is φ = 27398862.

The previous prime is 27398857. The next prime is 27398887. The reversal of 27398863 is 36889372.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27398863 - 2¹⁷ = 27267791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27398803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13699431 + 13699432.

It is an arithmetic number, because the mean of its divisors is an integer number (13699432).

Almost surely, 2^27398863 is an apocalyptic number.

27398863 is a deficient number, since it is larger than the sum of its proper divisors (1).

27398863 is an equidigital number, since it uses as much as digits as its factorization.

27398863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 46.

The square root of 27398863 is about 5234.3923238519. The cubic root of 27398863 is about 301.4700550645.

The spelling of 27398863 in words is "twenty-seven million, three hundred ninety-eight thousand, eight hundred sixty-three".