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83980799 = 717241513
BaseRepresentation
bin1010000000101…
…11000111111111
312212000122222222
411000113013333
5132444341144
612155555555
72036552660
oct500270777
9185018888
1083980799
1143450021
122415bbbb
13145252a6
14b221367
15758d2ee
hex50171ff

83980799 has 12 divisors (see below), whose sum is σ = 101958384. Its totient is φ = 67747584.

The previous prime is 83980789. The next prime is 83980801. The reversal of 83980799 is 99708938.

It is not a de Polignac number, because 83980799 - 224 = 67203583 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 83980799.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83980759) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18734 + ... + 22779.

It is an arithmetic number, because the mean of its divisors is an integer number (8496532).

Almost surely, 283980799 is an apocalyptic number.

83980799 is a deficient number, since it is larger than the sum of its proper divisors (17977585).

83980799 is a wasteful number, since it uses less digits than its factorization.

83980799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41554 (or 41537 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 83980799 is about 9164.1038296169. The cubic root of 83980799 is about 437.9185419431.

The spelling of 83980799 in words is "eighty-three million, nine hundred eighty thousand, seven hundred ninety-nine".

Divisors: 1 7 17 119 289 2023 41513 290591 705721 4940047 11997257 83980799