27994693 has 2 divisors, whose sum is σ = 27994694. Its totient is φ = 27994692.

The previous prime is 27994691. The next prime is 27994709. The reversal of 27994693 is 39649972.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14577124 + 13417569 = 3818^2 + 3663^2 .

It is a cyclic number.

It is not a de Polignac number, because 27994693 - 2¹ = 27994691 is a prime.

Together with 27994691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27994691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13997346 + 13997347.

It is an arithmetic number, because the mean of its divisors is an integer number (13997347).

Almost surely, 2^27994693 is an apocalyptic number.

It is an amenable number.

27994693 is a deficient number, since it is larger than the sum of its proper divisors (1).

27994693 is an equidigital number, since it uses as much as digits as its factorization.

27994693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 49.

The square root of 27994693 is about 5291.0011340010. The cubic root of 27994693 is about 303.6397112400.

The spelling of 27994693 in words is "twenty-seven million, nine hundred ninety-four thousand, six hundred ninety-three".