844006897 has 2 divisors, whose sum is σ = 844006898. Its totient is φ = 844006896.

The previous prime is 844006841. The next prime is 844006921. The reversal of 844006897 is 798600448.

It is a happy number.

844006897 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 559038736 + 284968161 = 23644^2 + 16881^2 .

It is a cyclic number.

It is not a de Polignac number, because 844006897 - 2²⁷ = 709789169 is a prime.

It is not a weakly prime, because it can be changed into another prime (844006817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422003448 + 422003449.

It is an arithmetic number, because the mean of its divisors is an integer number (422003449).

Almost surely, 2^844006897 is an apocalyptic number.

It is an amenable number.

844006897 is a deficient number, since it is larger than the sum of its proper divisors (1).

844006897 is an equidigital number, since it uses as much as digits as its factorization.

844006897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 387072, while the sum is 46.

The square root of 844006897 is about 29051.7967946907. The cubic root of 844006897 is about 945.0366798935.

The spelling of 844006897 in words is "eight hundred forty-four million, six thousand, eight hundred ninety-seven".