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808549349 = 7111388019
BaseRepresentation
bin110000001100010…
…111101111100101
32002100102120012012
4300030113233211
53123442034344
6212122004005
726015361506
oct6014275745
92070376165
10808549349
11385450103
121a6946605
13cb68738a
1479552bad
154aeb529e
hex30317be5

808549349 has 4 divisors (see below), whose sum is σ = 819937440. Its totient is φ = 797161260.

The previous prime is 808549333. The next prime is 808549369. The reversal of 808549349 is 943945808.

It is a happy number.

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 808549349 - 24 = 808549333 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 808549297 and 808549306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (808549309) 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, 5693939 + ... + 5694080.

It is an arithmetic number, because the mean of its divisors is an integer number (204984360).

Almost surely, 2808549349 is an apocalyptic number.

It is an amenable number.

808549349 is a deficient number, since it is larger than the sum of its proper divisors (11388091).

808549349 is a wasteful number, since it uses less digits than its factorization.

808549349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11388090.

The product of its (nonzero) digits is 1244160, while the sum is 50.

The square root of 808549349 is about 28435.0021804114. The cubic root of 808549349 is about 931.6129365397.

The spelling of 808549349 in words is "eight hundred eight million, five hundred forty-nine thousand, three hundred forty-nine".

Divisors: 1 71 11388019 808549349