27029993 has 2 divisors, whose sum is σ = 27029994. Its totient is φ = 27029992.

The previous prime is 27029969. The next prime is 27029999. The reversal of 27029993 is 39992072.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18550249 + 8479744 = 4307^2 + 2912^2 .

It is a cyclic number.

It is not a de Polignac number, because 27029993 - 2²² = 22835689 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 27029993.

It is not a weakly prime, because it can be changed into another prime (27029999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13514996 + 13514997.

It is an arithmetic number, because the mean of its divisors is an integer number (13514997).

Almost surely, 2^27029993 is an apocalyptic number.

It is an amenable number.

27029993 is a deficient number, since it is larger than the sum of its proper divisors (1).

27029993 is an equidigital number, since it uses as much as digits as its factorization.

27029993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 61236, while the sum is 41.

The square root of 27029993 is about 5199.0376994209. The cubic root of 27029993 is about 300.1110440775. Note that the first 3 decimals are identical.

The spelling of 27029993 in words is "twenty-seven million, twenty-nine thousand, nine hundred ninety-three".