27949429 has 2 divisors, whose sum is σ = 27949430. Its totient is φ = 27949428.

The previous prime is 27949423. The next prime is 27949433. The reversal of 27949429 is 92494972.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16184529 + 11764900 = 4023^2 + 3430^2 .

It is a cyclic number.

It is not a de Polignac number, because 27949429 - 2¹⁹ = 27425141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (27949423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13974714 + 13974715.

It is an arithmetic number, because the mean of its divisors is an integer number (13974715).

Almost surely, 2^27949429 is an apocalyptic number.

It is an amenable number.

27949429 is a deficient number, since it is larger than the sum of its proper divisors (1).

27949429 is an equidigital number, since it uses as much as digits as its factorization.

27949429 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 326592, while the sum is 46.

The square root of 27949429 is about 5286.7219522120. The cubic root of 27949429 is about 303.4759735157.

The spelling of 27949429 in words is "twenty-seven million, nine hundred forty-nine thousand, four hundred twenty-nine".