Search a number
-
+
868947469 = 132171512003
BaseRepresentation
bin110011110010110…
…001011000001101
32020120002002211121
4303302301120031
53234422304334
6222120320541
730350634355
oct6362613015
92216062747
10868947469
11406553105
12203013151
1310b043600
1483595b65
1551445db4
hex33cb160d

868947469 has 24 divisors (see below), whose sum is σ = 1003378752. Its totient is φ = 749548800.

The previous prime is 868947451. The next prime is 868947473. The reversal of 868947469 is 964749868.

868947469 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 868947469 - 213 = 868939277 is a prime.

It is a super-2 number, since 2×8689474692 = 1510139407763011922, 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 (868947419) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 432822 + ... + 434824.

It is an arithmetic number, because the mean of its divisors is an integer number (41807448).

Almost surely, 2868947469 is an apocalyptic number.

It is an amenable number.

868947469 is a deficient number, since it is larger than the sum of its proper divisors (134431283).

868947469 is a wasteful number, since it uses less digits than its factorization.

868947469 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197 (or 2184 counting only the distinct ones).

The product of its digits is 20901888, while the sum is 61.

The square root of 868947469 is about 29477.9149364401. The cubic root of 868947469 is about 954.2551391539.

The spelling of 868947469 in words is "eight hundred sixty-eight million, nine hundred forty-seven thousand, four hundred sixty-nine".

Divisors: 1 13 17 151 169 221 1963 2003 2567 2873 25519 26039 33371 34051 302453 338507 433823 442663 3931889 5141701 5754619 51114557 66842113 868947469