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489939983 = 13176136343
BaseRepresentation
bin11101001100111…
…110010000001111
31021010220112022022
4131030332100033
52000411034413
6120341040355
715066264311
oct3514762017
91233815268
10489939983
11231616185
121180b60bb
137a672120
14490d77b1
152d02c608
hex1d33e40f

489939983 has 16 divisors (see below), whose sum is σ = 567838656. Its totient is φ = 418659840.

The previous prime is 489939971. The next prime is 489940001. The reversal of 489939983 is 389939984.

It is a cyclic number.

It is not a de Polignac number, because 489939983 - 226 = 422831119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489939943) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4691 + ... + 31652.

It is an arithmetic number, because the mean of its divisors is an integer number (35489916).

Almost surely, 2489939983 is an apocalyptic number.

489939983 is a deficient number, since it is larger than the sum of its proper divisors (77898673).

489939983 is a wasteful number, since it uses less digits than its factorization.

489939983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36434.

The product of its digits is 15116544, while the sum is 62.

The square root of 489939983 is about 22134.5879338198. The cubic root of 489939983 is about 788.3413273682.

Subtracting from 489939983 its reverse (389939984), we obtain a palindrome (99999999).

The spelling of 489939983 in words is "four hundred eighty-nine million, nine hundred thirty-nine thousand, nine hundred eighty-three".

Divisors: 1 13 17 61 221 793 1037 13481 36343 472459 617831 2216923 8031803 28819999 37687691 489939983