102044909 has 2 divisors, whose sum is σ = 102044910. Its totient is φ = 102044908.

The previous prime is 102044893. The next prime is 102044911. The reversal of 102044909 is 909440201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80048809 + 21996100 = 8947^2 + 4690^2 .

It is an emirp because it is prime and its reverse (909440201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 102044909 - 2⁴ = 102044893 is a prime.

It is a Sophie Germain prime.

Together with 102044911, 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 (102044959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51022454 + 51022455.

It is an arithmetic number, because the mean of its divisors is an integer number (51022455).

Almost surely, 2^102044909 is an apocalyptic number.

It is an amenable number.

102044909 is a deficient number, since it is larger than the sum of its proper divisors (1).

102044909 is an equidigital number, since it uses as much as digits as its factorization.

102044909 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 102044909 is about 10101.7280204923. The cubic root of 102044909 is about 467.3014345426.

The spelling of 102044909 in words is "one hundred two million, forty-four thousand, nine hundred nine".