27240979 has 2 divisors, whose sum is σ = 27240980. Its totient is φ = 27240978.

The previous prime is 27240977. The next prime is 27241069. The reversal of 27240979 is 97904272.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 27240979 - 2¹ = 27240977 is a prime.

Together with 27240977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (27240977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13620489 + 13620490.

It is an arithmetic number, because the mean of its divisors is an integer number (13620490).

Almost surely, 2^27240979 is an apocalyptic number.

27240979 is a deficient number, since it is larger than the sum of its proper divisors (1).

27240979 is an equidigital number, since it uses as much as digits as its factorization.

27240979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The square root of 27240979 is about 5219.2891278411. The cubic root of 27240979 is about 300.8898726273.

The spelling of 27240979 in words is "twenty-seven million, two hundred forty thousand, nine hundred seventy-nine".