27438923 has 2 divisors, whose sum is σ = 27438924. Its totient is φ = 27438922.

The previous prime is 27438911. The next prime is 27438947. The reversal of 27438923 is 32983472.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27438923 - 2¹⁴ = 27422539 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is not a weakly prime, because it can be changed into another prime (27435923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13719461 + 13719462.

It is an arithmetic number, because the mean of its divisors is an integer number (13719462).

Almost surely, 2^27438923 is an apocalyptic number.

27438923 is a deficient number, since it is larger than the sum of its proper divisors (1).

27438923 is an equidigital number, since it uses as much as digits as its factorization.

27438923 is an evil number, because the sum of its binary digits is even.

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

The square root of 27438923 is about 5238.2175403471. The cubic root of 27438923 is about 301.6169104199.

The spelling of 27438923 in words is "twenty-seven million, four hundred thirty-eight thousand, nine hundred twenty-three".