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83308489 = 1171106669
BaseRepresentation
bin1001111011100…
…10111111001001
312210202111202121
410331302333021
5132311332424
612133331241
72031052615
oct475627711
9183674677
1083308489
11430309a0
1223a96b21
131434b284
14b0c8345
1574a8ee4
hex4f72fc9

83308489 has 8 divisors (see below), whose sum is σ = 92162880. Its totient is φ = 74667600.

The previous prime is 83308481. The next prime is 83308499. The reversal of 83308489 is 98480338.

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

It is a cyclic number.

It is not a de Polignac number, because 83308489 - 23 = 83308481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83308481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 52554 + ... + 54115.

It is an arithmetic number, because the mean of its divisors is an integer number (11520360).

Almost surely, 283308489 is an apocalyptic number.

It is an amenable number.

83308489 is a deficient number, since it is larger than the sum of its proper divisors (8854391).

83308489 is a wasteful number, since it uses less digits than its factorization.

83308489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106751.

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 83308489 is about 9127.3484101353. The cubic root of 83308489 is about 436.7468210052.

The spelling of 83308489 in words is "eighty-three million, three hundred eight thousand, four hundred eighty-nine".

Divisors: 1 11 71 781 106669 1173359 7573499 83308489