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494620487 = 1489332183
BaseRepresentation
bin11101011110110…
…100111101000111
31021110201022202022
4131132310331013
52003110323422
6121025233355
715154130144
oct3536647507
91243638668
10494620487
11234222769
1211979285b
137b62065a
14499953cb
152d654342
hex1d7b4f47

494620487 has 4 divisors (see below), whose sum is σ = 494954160. Its totient is φ = 494286816.

The previous prime is 494620459. The next prime is 494620517. The reversal of 494620487 is 784026494.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-494620487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494620417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 164603 + ... + 167580.

It is an arithmetic number, because the mean of its divisors is an integer number (123738540).

Almost surely, 2494620487 is an apocalyptic number.

494620487 is a deficient number, since it is larger than the sum of its proper divisors (333673).

494620487 is a wasteful number, since it uses less digits than its factorization.

494620487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333672.

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 494620487 is about 22240.0649054808. The cubic root of 494620487 is about 790.8437745366.

The spelling of 494620487 in words is "four hundred ninety-four million, six hundred twenty thousand, four hundred eighty-seven".

Divisors: 1 1489 332183 494620487