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8139299 = 71995843
BaseRepresentation
bin11111000011001000100011
3120022112000112
4133003020203
54040424144
6450241535
7126116510
oct37031043
916275015
108139299
11465a1a3
1228862ab
1318bc96c
14111c307
15aab99e
hex7c3223

8139299 has 8 divisors (see below), whose sum is σ = 9350400. Its totient is φ = 6940296.

The previous prime is 8139283. The next prime is 8139301. The reversal of 8139299 is 9929318.

8139299 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 8139299 - 24 = 8139283 is a prime.

It is a super-2 number, since 2×81392992 = 132496376422802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (8130299) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1529 + ... + 4314.

It is an arithmetic number, because the mean of its divisors is an integer number (1168800).

Almost surely, 28139299 is an apocalyptic number.

8139299 is a deficient number, since it is larger than the sum of its proper divisors (1211101).

8139299 is a wasteful number, since it uses less digits than its factorization.

8139299 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6049.

The product of its digits is 34992, while the sum is 41.

The square root of 8139299 is about 2852.9456707060. The cubic root of 8139299 is about 201.1541518557.

The spelling of 8139299 in words is "eight million, one hundred thirty-nine thousand, two hundred ninety-nine".

Divisors: 1 7 199 1393 5843 40901 1162757 8139299