900010109 has 2 divisors, whose sum is σ = 900010110. Its totient is φ = 900010108.

The previous prime is 900010049. The next prime is 900010289. The reversal of 900010109 is 901010009.

900010109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 534626884 + 365383225 = 23122^2 + 19115^2 .

It is a cyclic number.

It is not a de Polignac number, because 900010109 - 2¹² = 900006013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (900010009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 450005054 + 450005055.

It is an arithmetic number, because the mean of its divisors is an integer number (450005055).

Almost surely, 2^900010109 is an apocalyptic number.

It is an amenable number.

900010109 is a deficient number, since it is larger than the sum of its proper divisors (1).

900010109 is an equidigital number, since it uses as much as digits as its factorization.

900010109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 900010109 is about 30000.1684828602. The cubic root of 900010109 is about 965.4929994559.

The spelling of 900010109 in words is "nine hundred million, ten thousand, one hundred nine".