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9079120121 = 19289470689
BaseRepresentation
bin10000111010010100…
…00110000011111001
3212102201222002102012
420131022012003321
5122043223320441
64100525015305
7440663150651
oct103512060371
925381862365
109079120121
113939a21365
1219146b4535
13b18c93036
14621b2d361
153821099eb
hex21d2860f9

9079120121 has 4 divisors (see below), whose sum is σ = 9079610100. Its totient is φ = 9078630144.

The previous prime is 9079120117. The next prime is 9079120123. The reversal of 9079120121 is 1210219709.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4908543721 + 4170576400 = 70061^2 + 64580^2 .

It is a cyclic number.

It is not a de Polignac number, because 9079120121 - 22 = 9079120117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9079120123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216056 + ... + 254633.

It is an arithmetic number, because the mean of its divisors is an integer number (2269902525).

Almost surely, 29079120121 is an apocalyptic number.

It is an amenable number.

9079120121 is a deficient number, since it is larger than the sum of its proper divisors (489979).

9079120121 is a wasteful number, since it uses less digits than its factorization.

9079120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489978.

The product of its (nonzero) digits is 2268, while the sum is 32.

The square root of 9079120121 is about 95284.4169893483. The cubic root of 9079120121 is about 2086.1614732243.

The spelling of 9079120121 in words is "nine billion, seventy-nine million, one hundred twenty thousand, one hundred twenty-one".

Divisors: 1 19289 470689 9079120121