100444000009 has 2 divisors, whose sum is σ = 100444000010. Its totient is φ = 100444000008.

The previous prime is 100443999991. The next prime is 100444000021. The reversal of 100444000009 is 900000444001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70558234384 + 29885765625 = 265628^2 + 172875^2 .

It is a cyclic number.

It is not a de Polignac number, because 100444000009 - 2⁵ = 100443999977 is a prime.

It is not a weakly prime, because it can be changed into another prime (100444000039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50222000004 + 50222000005.

It is an arithmetic number, because the mean of its divisors is an integer number (50222000005).

Almost surely, 2^100444000009 is an apocalyptic number.

It is an amenable number.

100444000009 is a deficient number, since it is larger than the sum of its proper divisors (1).

100444000009 is an equidigital number, since it uses as much as digits as its factorization.

100444000009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The spelling of 100444000009 in words is "one hundred billion, four hundred forty-four million, nine", and thus it is an aban number.