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9126909909 = 3213641121697
BaseRepresentation
bin10001000000000000…
…11001011111010101
3212120001220001200100
420200000121133111
5122142442104114
64105353204313
7442113311535
oct104000313725
925501801610
109126909909
1139639a2557
121928700699
13b25b56410
1462820d4c5
153863e9909
hex2200197d5

9126909909 has 24 divisors (see below), whose sum is σ = 14219681112. Its totient is φ = 5607751680.

The previous prime is 9126909907. The next prime is 9126909923. The reversal of 9126909909 is 9099096219.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1984969809 + 7141940100 = 44553^2 + 84510^2 .

It is not a de Polignac number, because 9126909909 - 21 = 9126909907 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9126909907) 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 in 23 ways as a sum of consecutive naturals, for example, 14149 + ... + 135845.

It is an arithmetic number, because the mean of its divisors is an integer number (592486713).

Almost surely, 29126909909 is an apocalyptic number.

It is an amenable number.

9126909909 is a deficient number, since it is larger than the sum of its proper divisors (5092771203).

9126909909 is a wasteful number, since it uses less digits than its factorization.

9126909909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122357 (or 122354 counting only the distinct ones).

The product of its (nonzero) digits is 708588, while the sum is 54.

The square root of 9126909909 is about 95534.8622702728. The cubic root of 9126909909 is about 2089.8153808519.

The spelling of 9126909909 in words is "nine billion, one hundred twenty-six million, nine hundred nine thousand, nine hundred nine".