27724049 has 2 divisors, whose sum is σ = 27724050. Its totient is φ = 27724048.

The previous prime is 27724043. The next prime is 27724051. The reversal of 27724049 is 94042772.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15249025 + 12475024 = 3905^2 + 3532^2 .

It is a cyclic number.

It is not a de Polignac number, because 27724049 - 2⁴ = 27724033 is a prime.

Together with 27724051, 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 (27724043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13862024 + 13862025.

It is an arithmetic number, because the mean of its divisors is an integer number (13862025).

Almost surely, 2^27724049 is an apocalyptic number.

It is an amenable number.

27724049 is a deficient number, since it is larger than the sum of its proper divisors (1).

27724049 is an equidigital number, since it uses as much as digits as its factorization.

27724049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 35.

The square root of 27724049 is about 5265.3631403731. The cubic root of 27724049 is about 302.6580427711.

The spelling of 27724049 in words is "twenty-seven million, seven hundred twenty-four thousand, forty-nine".