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679007389 = 19193185167
BaseRepresentation
bin101000011110001…
…101010010011101
31202022200011000211
4220132031102131
52342311214024
6151213252421
722553316244
oct5036152235
91668604024
10679007389
11319311335
1216b494111
13aa89c228
146627195b
153e927594
hex2878d49d

679007389 has 8 divisors (see below), whose sum is σ = 718451840. Its totient is φ = 639933696.

The previous prime is 679007377. The next prime is 679007411. The reversal of 679007389 is 983700976.

679007389 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-679007389 is a prime.

It is a super-2 number, since 2×6790073892 = 922102068633194642, 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 (679007339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88917 + ... + 96250.

It is an arithmetic number, because the mean of its divisors is an integer number (89806480).

Almost surely, 2679007389 is an apocalyptic number.

It is an amenable number.

679007389 is a deficient number, since it is larger than the sum of its proper divisors (39444451).

679007389 is a wasteful number, since it uses less digits than its factorization.

679007389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185379.

The product of its (nonzero) digits is 571536, while the sum is 49.

The square root of 679007389 is about 26057.7702231024. The cubic root of 679007389 is about 878.9378494516.

The spelling of 679007389 in words is "six hundred seventy-nine million, seven thousand, three hundred eighty-nine".

Divisors: 1 19 193 3667 185167 3518173 35737231 679007389