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47998489 = 721189051
BaseRepresentation
bin1011011100011…
…0011000011001
310100022120112211
42313012120121
544241422424
64432435121
71121660200
oct267063031
9110276484
1047998489
1125103a80
12140a8aa1
139c37396
146536237
154331b94
hex2dc6619

47998489 has 12 divisors (see below), whose sum is σ = 60911568. Its totient is φ = 37401000.

The previous prime is 47998487. The next prime is 47998499. The reversal of 47998489 is 98489974.

47998489 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 47998489 - 21 = 47998487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47998481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43987 + ... + 45064.

It is an arithmetic number, because the mean of its divisors is an integer number (5075964).

Almost surely, 247998489 is an apocalyptic number.

47998489 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

47998489 is a deficient number, since it is larger than the sum of its proper divisors (12913079).

47998489 is a wasteful number, since it uses less digits than its factorization.

47998489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89076 (or 89069 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 58.

The square root of 47998489 is about 6928.0941823852. The cubic root of 47998489 is about 363.4203050969.

The spelling of 47998489 in words is "forty-seven million, nine hundred ninety-eight thousand, four hundred eighty-nine".

Divisors: 1 7 11 49 77 539 89051 623357 979561 4363499 6856927 47998489