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9129109 = 117111689
BaseRepresentation
bin100010110100…
…110010010101
3122011210210011
4202310302111
54314112414
6523400221
7140411323
oct42646225
918153704
109129109
115175920
123083071
131b78352
1412d8d13
15c04dc4
hex8b4c95

9129109 has 8 divisors (see below), whose sum is σ = 10100160. Its totient is φ = 8181600.

The previous prime is 9129073. The next prime is 9129149. The reversal of 9129109 is 9019219.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 9129109 - 27 = 9128981 is a prime.

It is a super-2 number, since 2×91291092 = 166681262267762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9129149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5064 + ... + 6625.

It is an arithmetic number, because the mean of its divisors is an integer number (1262520).

Almost surely, 29129109 is an apocalyptic number.

It is an amenable number.

9129109 is a deficient number, since it is larger than the sum of its proper divisors (971051).

9129109 is a wasteful number, since it uses less digits than its factorization.

9129109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11771.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 9129109 is about 3021.4415433697. The cubic root of 9129109 is about 208.9983211483.

The spelling of 9129109 in words is "nine million, one hundred twenty-nine thousand, one hundred nine".

Divisors: 1 11 71 781 11689 128579 829919 9129109