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8387994 = 231397999
BaseRepresentation
bin11111111111110110011010
3120210011011110
4133333312122
54121403434
6455441150
7131203536
oct37776632
916704143
108387994
11480a02a
1229861b6
131978c14
141184bc6
15b0a4e9
hex7ffd9a

8387994 has 8 divisors (see below), whose sum is σ = 16776000. Its totient is φ = 2795996.

The previous prime is 8387993. The next prime is 8387999. The reversal of 8387994 is 4997838.

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

8387994 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8387993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698994 + ... + 699005.

It is an arithmetic number, because the mean of its divisors is an integer number (2097000).

Almost surely, 28387994 is an apocalyptic number.

8387994 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8387994 is a wasteful number, since it uses less digits than its factorization.

8387994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398004.

The product of its digits is 435456, while the sum is 48.

The square root of 8387994 is about 2896.2033768366. The cubic root of 8387994 is about 203.1823771323.

The spelling of 8387994 in words is "eight million, three hundred eighty-seven thousand, nine hundred ninety-four".

Divisors: 1 2 3 6 1397999 2795998 4193997 8387994