27826489 has 2 divisors, whose sum is σ = 27826490. Its totient is φ = 27826488.

The previous prime is 27826483. The next prime is 27826493. The reversal of 27826489 is 98462872.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16670889 + 11155600 = 4083^2 + 3340^2 .

It is a cyclic number.

It is not a de Polignac number, because 27826489 - 2⁷ = 27826361 is a prime.

It is not a weakly prime, because it can be changed into another prime (27826483) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13913244 + 13913245.

It is an arithmetic number, because the mean of its divisors is an integer number (13913245).

Almost surely, 2^27826489 is an apocalyptic number.

It is an amenable number.

27826489 is a deficient number, since it is larger than the sum of its proper divisors (1).

27826489 is an equidigital number, since it uses as much as digits as its factorization.

27826489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 387072, while the sum is 46.

The square root of 27826489 is about 5275.0818950989. The cubic root of 27826489 is about 303.0303570902.

The spelling of 27826489 in words is "twenty-seven million, eight hundred twenty-six thousand, four hundred eighty-nine".