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80494893 = 3289100493
BaseRepresentation
bin1001100110001…
…00000100101101
312121110120020100
410303010010231
5131101314033
611553141313
71665123663
oct463040455
9177416210
1080494893
114148a006
1222b5a839
13138a471b
14a994c33
157100513
hex4cc412d

80494893 has 12 divisors (see below), whose sum is σ = 117577980. Its totient is φ = 53059776.

The previous prime is 80494867. The next prime is 80494907. The reversal of 80494893 is 39849408.

It is a happy number.

80494893 is a `hidden beast` number, since 80 + 494 + 89 + 3 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 57426084 + 23068809 = 7578^2 + 4803^2 .

It is not a de Polignac number, because 80494893 - 25 = 80494861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80494093) 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 11 ways as a sum of consecutive naturals, for example, 49446 + ... + 51047.

It is an arithmetic number, because the mean of its divisors is an integer number (9798165).

Almost surely, 280494893 is an apocalyptic number.

It is an amenable number.

80494893 is a deficient number, since it is larger than the sum of its proper divisors (37083087).

80494893 is a wasteful number, since it uses less digits than its factorization.

80494893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100588 (or 100585 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 80494893 is about 8971.8946159660. The cubic root of 80494893 is about 431.7736243228.

The spelling of 80494893 in words is "eighty million, four hundred ninety-four thousand, eight hundred ninety-three".

Divisors: 1 3 9 89 267 801 100493 301479 904437 8943877 26831631 80494893