Base | Representation |
---|---|
bin | 1111110010011110011001 |
3 | 21210021111210 |
4 | 33302132121 |
5 | 2024421110 |
6 | 224413333 |
7 | 50115531 |
oct | 17623631 |
9 | 7707453 |
10 | 4138905 |
11 | 2377691 |
12 | 1477249 |
13 | b1bb74 |
14 | 79a4c1 |
15 | 56b520 |
hex | 3f2799 |
4138905 has 16 divisors (see below), whose sum is σ = 7012224. Its totient is φ = 2077440.
The previous prime is 4138877. The next prime is 4138933. The reversal of 4138905 is 5098314.
It is an interprime number because it is at equal distance from previous prime (4138877) and next prime (4138933).
It is not a de Polignac number, because 4138905 - 27 = 4138777 is a prime.
It is an Ulam number.
It is a Curzon number.
It is an unprimeable number.
It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7861 + ... + 8370.
It is an arithmetic number, because the mean of its divisors is an integer number (438264).
Almost surely, 24138905 is an apocalyptic number.
It is an amenable number.
4138905 is a deficient number, since it is larger than the sum of its proper divisors (2873319).
4138905 is a wasteful number, since it uses less digits than its factorization.
4138905 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 16256.
The product of its (nonzero) digits is 4320, while the sum is 30.
The square root of 4138905 is about 2034.4298955727. The cubic root of 4138905 is about 160.5567195037.
The spelling of 4138905 in words is "four million, one hundred thirty-eight thousand, nine hundred five".
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