27689419 has 2 divisors, whose sum is σ = 27689420. Its totient is φ = 27689418.

The previous prime is 27689393. The next prime is 27689423. The reversal of 27689419 is 91498672.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 27689419 - 2⁹ = 27688907 is a prime.

It is a super-2 number, since 2×27689419² = 1533407849115122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (27689449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13844709 + 13844710.

It is an arithmetic number, because the mean of its divisors is an integer number (13844710).

Almost surely, 2^27689419 is an apocalyptic number.

27689419 is a deficient number, since it is larger than the sum of its proper divisors (1).

27689419 is an equidigital number, since it uses as much as digits as its factorization.

27689419 is an evil number, because the sum of its binary digits is even.

The product of its digits is 217728, while the sum is 46.

The square root of 27689419 is about 5262.0736406858. The cubic root of 27689419 is about 302.5319739442.

The spelling of 27689419 in words is "twenty-seven million, six hundred eighty-nine thousand, four hundred nineteen".