Base | Representation |
---|---|
bin | 11111111101101100010101 |
3 | 120202201001011 |
4 | 133331230111 |
5 | 4121113112 |
6 | 455332221 |
7 | 131136013 |
oct | 37755425 |
9 | 16681034 |
10 | 8379157 |
11 | 4803426 |
12 | 2981071 |
13 | 1974ba7 |
14 | 11818b3 |
15 | b07aa7 |
hex | 7fdb15 |
8379157 has 4 divisors (see below), whose sum is σ = 8456140. Its totient is φ = 8302176.
The previous prime is 8379149. The next prime is 8379167. The reversal of 8379157 is 7519738.
It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7519738 = 2 ⋅3759869.
It can be written as a sum of positive squares in 2 ways, for example, as 7474756 + 904401 = 2734^2 + 951^2 .
It is a cyclic number.
It is not a de Polignac number, because 8379157 - 23 = 8379149 is a prime.
It is a Duffinian number.
8379157 is a lucky number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (8379127) 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, 38328 + ... + 38545.
It is an arithmetic number, because the mean of its divisors is an integer number (2114035).
Almost surely, 28379157 is an apocalyptic number.
It is an amenable number.
8379157 is a deficient number, since it is larger than the sum of its proper divisors (76983).
8379157 is a wasteful number, since it uses less digits than its factorization.
8379157 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 76982.
The product of its digits is 52920, while the sum is 40.
The square root of 8379157 is about 2894.6773568051. The cubic root of 8379157 is about 203.1109991770.
The spelling of 8379157 in words is "eight million, three hundred seventy-nine thousand, one hundred fifty-seven".
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