28849349 has 2 divisors, whose sum is σ = 28849350. Its totient is φ = 28849348.

The previous prime is 28849343. The next prime is 28849351. The reversal of 28849349 is 94394882.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 25573249 + 3276100 = 5057^2 + 1810^2 .

It is a cyclic number.

It is not a de Polignac number, because 28849349 - 2²⁴ = 12072133 is a prime.

It is a Sophie Germain prime.

Together with 28849351, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (28849343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14424674 + 14424675.

It is an arithmetic number, because the mean of its divisors is an integer number (14424675).

Almost surely, 2^28849349 is an apocalyptic number.

It is an amenable number.

28849349 is a deficient number, since it is larger than the sum of its proper divisors (1).

28849349 is an equidigital number, since it uses as much as digits as its factorization.

28849349 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The square root of 28849349 is about 5371.1589996946. The cubic root of 28849349 is about 306.6987499252.

The spelling of 28849349 in words is "twenty-eight million, eight hundred forty-nine thousand, three hundred forty-nine".