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8388393 = 313215087
BaseRepresentation
bin11111111111111100101001
3120210011201020
4133333330221
54121412033
6455443053
7131204646
oct37777451
916704636
108388393
11480a362
122986489
131979160
141184dcd
15b0a6b3
hex7fff29

8388393 has 8 divisors (see below), whose sum is σ = 12044928. Its totient is φ = 5162064.

The previous prime is 8388377. The next prime is 8388409. The reversal of 8388393 is 3938838.

It is an interprime number because it is at equal distance from previous prime (8388377) and next prime (8388409).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 8388393 - 24 = 8388377 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8388593) 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, 107505 + ... + 107582.

It is an arithmetic number, because the mean of its divisors is an integer number (1505616).

Almost surely, 28388393 is an apocalyptic number.

It is an amenable number.

8388393 is a deficient number, since it is larger than the sum of its proper divisors (3656535).

8388393 is a wasteful number, since it uses less digits than its factorization.

8388393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215103.

The product of its digits is 124416, while the sum is 42.

The square root of 8388393 is about 2896.2722593016. The cubic root of 8388393 is about 203.1855987402.

The spelling of 8388393 in words is "eight million, three hundred eighty-eight thousand, three hundred ninety-three".

Divisors: 1 3 13 39 215087 645261 2796131 8388393