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104908489 = 714986927
BaseRepresentation
bin1100100000011…
…00011011001001
321022101220101121
412100030123021
5203324032424
614224315241
72412464440
oct620143311
9238356347
10104908489
1154244334
122b172b21
1318971a3a
14dd0bd57
159323ee4
hex640c6c9

104908489 has 4 divisors (see below), whose sum is σ = 119895424. Its totient is φ = 89921556.

The previous prime is 104908459. The next prime is 104908493. The reversal of 104908489 is 984809401.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 984809401 = 2129462569.

It is a cyclic number.

It is not a de Polignac number, because 104908489 - 27 = 104908361 is a prime.

It is a super-2 number, since 2×1049084892 = 22011582128526242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (104908429) 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 3 ways as a sum of consecutive naturals, for example, 7493457 + ... + 7493470.

It is an arithmetic number, because the mean of its divisors is an integer number (29973856).

Almost surely, 2104908489 is an apocalyptic number.

It is an amenable number.

104908489 is a deficient number, since it is larger than the sum of its proper divisors (14986935).

104908489 is an equidigital number, since it uses as much as digits as its factorization.

104908489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14986934.

The product of its (nonzero) digits is 82944, while the sum is 43.

The square root of 104908489 is about 10242.4845130466. The cubic root of 104908489 is about 471.6323039446.

The spelling of 104908489 in words is "one hundred four million, nine hundred eight thousand, four hundred eighty-nine".

Divisors: 1 7 14986927 104908489