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49806869 = 77879041
BaseRepresentation
bin1011110111111…
…1111000010101
310110201110011212
42331333320111
5100222304434
64535311205
71143231350
oct275777025
9113643155
1049806869
1126129702
121481b505
13a41b528
146887297
15458c8ce
hex2f7fe15

49806869 has 8 divisors (see below), whose sum is σ = 57000768. Its totient is φ = 42632640.

The previous prime is 49806853. The next prime is 49806871. The reversal of 49806869 is 96860894.

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 49806869 - 24 = 49806853 is a prime.

It is a super-2 number, since 2×498068692 = 4961448399166322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (49806839) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 989 + ... + 10029.

It is an arithmetic number, because the mean of its divisors is an integer number (7125096).

Almost surely, 249806869 is an apocalyptic number.

It is an amenable number.

49806869 is a deficient number, since it is larger than the sum of its proper divisors (7193899).

49806869 is an equidigital number, since it uses as much as digits as its factorization.

49806869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9835.

The product of its (nonzero) digits is 746496, while the sum is 50.

The square root of 49806869 is about 7057.3981749650. The cubic root of 49806869 is about 367.9282040348.

The spelling of 49806869 in words is "forty-nine million, eight hundred six thousand, eight hundred sixty-nine".

Divisors: 1 7 787 5509 9041 63287 7115267 49806869