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386493 = 3128831
BaseRepresentation
bin1011110010110111101
3201122011120
41132112331
544331433
612141153
73166542
oct1362675
9648146
10386493
11244418
121677b9
13106bc3
14a0bc9
15797b3
hex5e5bd

386493 has 4 divisors (see below), whose sum is σ = 515328. Its totient is φ = 257660.

The previous prime is 386489. The next prime is 386501. The reversal of 386493 is 394683.

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: 394683 = 3131561.

It is a cyclic number.

It is not a de Polignac number, because 386493 - 22 = 386489 is a prime.

It is a D-number.

It is a Curzon number.

386493 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (386413) 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 3 ways as a sum of consecutive naturals, for example, 64413 + ... + 64418.

It is an arithmetic number, because the mean of its divisors is an integer number (128832).

2386493 is an apocalyptic number.

It is an amenable number.

386493 is a deficient number, since it is larger than the sum of its proper divisors (128835).

386493 is a wasteful number, since it uses less digits than its factorization.

386493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128834.

The product of its digits is 15552, while the sum is 33.

The square root of 386493 is about 621.6856118650. The cubic root of 386493 is about 72.8417790419.

The spelling of 386493 in words is "three hundred eighty-six thousand, four hundred ninety-three".

Divisors: 1 3 128831 386493