Base | Representation |
---|---|
bin | 10111001111110… |
… | …001110001101101 |
3 | 1000011212122220101 |
4 | 113033301301231 |
5 | 1244320341023 |
6 | 102411151101 |
7 | 12444022156 |
oct | 2717616155 |
9 | 1004778811 |
10 | 390012013 |
11 | 190173886 |
12 | aa745491 |
13 | 62a55351 |
14 | 39b2492d |
15 | 2438e1ad |
hex | 173f1c6d |
390012013 has 2 divisors, whose sum is σ = 390012014. Its totient is φ = 390012012.
The previous prime is 390011971. The next prime is 390012043. The reversal of 390012013 is 310210093.
It is a strong prime.
It can be written as a sum of positive squares in only one way, i.e., 388957284 + 1054729 = 19722^2 + 1027^2 .
It is a cyclic number.
It is not a de Polignac number, because 390012013 - 213 = 390003821 is a prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (390012043) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195006006 + 195006007.
It is an arithmetic number, because the mean of its divisors is an integer number (195006007).
Almost surely, 2390012013 is an apocalyptic number.
It is an amenable number.
390012013 is a deficient number, since it is larger than the sum of its proper divisors (1).
390012013 is an equidigital number, since it uses as much as digits as its factorization.
390012013 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 162, while the sum is 19.
The square root of 390012013 is about 19748.7218067398. The cubic root of 390012013 is about 730.6218589278.
It can be divided in two parts, 39001 and 2013, that added together give a palindrome (41014).
The spelling of 390012013 in words is "three hundred ninety million, twelve thousand, thirteen".
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