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808112369 = 1847437527
BaseRepresentation
bin110000001010101…
…101000011110001
32002022121100202202
4300022231003301
53123334043434
6212104352545
726011561511
oct6012550361
92068540682
10808112369
11385181869
121a6775755
13cb5634cc
147947b841
154ae2aa7e
hex302ad0f1

808112369 has 4 divisors (see below), whose sum is σ = 808551744. Its totient is φ = 807672996.

The previous prime is 808112363. The next prime is 808112453. The reversal of 808112369 is 963211808.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 808112369 - 220 = 807063793 is a prime.

It is a super-2 number, since 2×8081123692 = 1306091201861584322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (808112363) 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 3 ways as a sum of consecutive naturals, for example, 216917 + ... + 220610.

It is an arithmetic number, because the mean of its divisors is an integer number (202137936).

Almost surely, 2808112369 is an apocalyptic number.

It is an amenable number.

808112369 is a deficient number, since it is larger than the sum of its proper divisors (439375).

808112369 is a wasteful number, since it uses less digits than its factorization.

808112369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 439374.

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 808112369 is about 28427.3173022007. The cubic root of 808112369 is about 931.4450764159.

The spelling of 808112369 in words is "eight hundred eight million, one hundred twelve thousand, three hundred sixty-nine".

Divisors: 1 1847 437527 808112369