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8983989 = 327592417
BaseRepresentation
bin100010010001…
…010110110101
3121220102201100
4202101112311
54244441424
6520320313
7136235250
oct42212665
917812640
108983989
115086893
123013099
131b27291
14129c097
15bc6dc9
hex8915b5

8983989 has 24 divisors (see below), whose sum is σ = 15088320. Its totient is φ = 5044608.

The previous prime is 8983981. The next prime is 8983991. The reversal of 8983989 is 9893898.

8983989 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 8983989 - 23 = 8983981 is a prime.

8983989 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8983981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2509 + ... + 4925.

It is an arithmetic number, because the mean of its divisors is an integer number (628680).

Almost surely, 28983989 is an apocalyptic number.

It is an amenable number.

8983989 is a deficient number, since it is larger than the sum of its proper divisors (6104331).

8983989 is a wasteful number, since it uses less digits than its factorization.

8983989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2489 (or 2486 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 8983989 is about 2997.3303121278. The cubic root of 8983989 is about 207.8849601162.

Subtracting 8983989 from its reverse (9893898), we obtain a palindrome (909909).

The spelling of 8983989 in words is "eight million, nine hundred eighty-three thousand, nine hundred eighty-nine".

Divisors: 1 3 7 9 21 59 63 177 413 531 1239 2417 3717 7251 16919 21753 50757 142603 152271 427809 998221 1283427 2994663 8983989