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807394853 = 1256964237
BaseRepresentation
bin110000000111111…
…101111000100101
32002021020220112002
4300013331320211
53123143113403
6212041135045
726002512566
oct6007757045
92067226462
10807394853
11384831781
121a648a485
13cb371a45
147933216d
154ad38188
hex301fde25

807394853 has 4 divisors (see below), whose sum is σ = 807471660. Its totient is φ = 807318048.

The previous prime is 807394799. The next prime is 807394859. The reversal of 807394853 is 358493708.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 742399009 + 64995844 = 27247^2 + 8062^2 .

It is a cyclic number.

It is not a de Polignac number, because 807394853 - 214 = 807378469 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 807394798 and 807394807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (807394859) 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, 19550 + ... + 44687.

It is an arithmetic number, because the mean of its divisors is an integer number (201867915).

Almost surely, 2807394853 is an apocalyptic number.

It is an amenable number.

807394853 is a deficient number, since it is larger than the sum of its proper divisors (76807).

807394853 is a wasteful number, since it uses less digits than its factorization.

807394853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76806.

The product of its (nonzero) digits is 725760, while the sum is 47.

The square root of 807394853 is about 28414.6943147379. The cubic root of 807394853 is about 931.1693207705.

The spelling of 807394853 in words is "eight hundred seven million, three hundred ninety-four thousand, eight hundred fifty-three".

Divisors: 1 12569 64237 807394853