27479929 has 2 divisors, whose sum is σ = 27479930. Its totient is φ = 27479928.

The previous prime is 27479927. The next prime is 27479941. The reversal of 27479929 is 92997472.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21344400 + 6135529 = 4620^2 + 2477^2 .

It is a cyclic number.

It is not a de Polignac number, because 27479929 - 2¹ = 27479927 is a prime.

Together with 27479927, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (27479923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13739964 + 13739965.

It is an arithmetic number, because the mean of its divisors is an integer number (13739965).

Almost surely, 2^27479929 is an apocalyptic number.

It is an amenable number.

27479929 is a deficient number, since it is larger than the sum of its proper divisors (1).

27479929 is an equidigital number, since it uses as much as digits as its factorization.

27479929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 571536, while the sum is 49.

The square root of 27479929 is about 5242.1301967807. The cubic root of 27479929 is about 301.7670857382.

The spelling of 27479929 in words is "twenty-seven million, four hundred seventy-nine thousand, nine hundred twenty-nine".