64844999 has 2 divisors, whose sum is σ = 64845000. Its totient is φ = 64844998.

The previous prime is 64844959. The next prime is 64845019. The reversal of 64844999 is 99944846.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 64844999 - 2¹² = 64840903 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 64844999.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (64844909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32422499 + 32422500.

It is an arithmetic number, because the mean of its divisors is an integer number (32422500).

Almost surely, 2^64844999 is an apocalyptic number.

64844999 is a deficient number, since it is larger than the sum of its proper divisors (1).

64844999 is an equidigital number, since it uses as much as digits as its factorization.

64844999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2239488, while the sum is 53.

The square root of 64844999 is about 8052.6392567903. The cubic root of 64844999 is about 401.7527232686.

The spelling of 64844999 in words is "sixty-four million, eight hundred forty-four thousand, nine hundred ninety-nine".