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494173889 = 1144924899
BaseRepresentation
bin11101011101000…
…111111011000001
31021102212122010122
4131131013323001
52003002031024
6121011510025
715150260126
oct3535077301
91242778118
10494173889
11233a48180
121195b8315
137b4c52b1
14498ba74d
152d5b6d5e
hex1d747ec1

494173889 has 4 divisors (see below), whose sum is σ = 539098800. Its totient is φ = 449248980.

The previous prime is 494173873. The next prime is 494173903. The reversal of 494173889 is 988371494.

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.

It is a cyclic number.

It is not a de Polignac number, because 494173889 - 24 = 494173873 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 494173889.

It is not an unprimeable number, because it can be changed into a prime (494176889) 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 3 ways as a sum of consecutive naturals, for example, 22462439 + ... + 22462460.

It is an arithmetic number, because the mean of its divisors is an integer number (134774700).

Almost surely, 2494173889 is an apocalyptic number.

It is an amenable number.

494173889 is a deficient number, since it is larger than the sum of its proper divisors (44924911).

494173889 is a wasteful number, since it uses less digits than its factorization.

494173889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44924910.

The product of its digits is 1741824, while the sum is 53.

The square root of 494173889 is about 22230.0222447032. The cubic root of 494173889 is about 790.6056824976.

The spelling of 494173889 in words is "four hundred ninety-four million, one hundred seventy-three thousand, eight hundred eighty-nine".

Divisors: 1 11 44924899 494173889