27969013 has 2 divisors, whose sum is σ = 27969014. Its totient is φ = 27969012.

The previous prime is 27968999. The next prime is 27969023. The reversal of 27969013 is 31096972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27060804 + 908209 = 5202^2 + 953^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27969013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27969023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13984506 + 13984507.

It is an arithmetic number, because the mean of its divisors is an integer number (13984507).

Almost surely, 2^27969013 is an apocalyptic number.

It is an amenable number.

27969013 is a deficient number, since it is larger than the sum of its proper divisors (1).

27969013 is an equidigital number, since it uses as much as digits as its factorization.

27969013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20412, while the sum is 37.

The square root of 27969013 is about 5288.5738153116. The cubic root of 27969013 is about 303.5468382415.

The spelling of 27969013 in words is "twenty-seven million, nine hundred sixty-nine thousand, thirteen".