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395013 = 3131671
BaseRepresentation
bin1100000011100000101
3202001212010
41200130011
5100120023
612244433
73233433
oct1403405
9661763
10395013
1124a863
12170719
1310aa48
14a3d53
157c093
hex60705

395013 has 4 divisors (see below), whose sum is σ = 526688. Its totient is φ = 263340.

The previous prime is 394993. The next prime is 395023. The reversal of 395013 is 310593.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 395013 - 25 = 394981 is a prime.

It is a D-number.

It is the 629-th Hogben number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395023) by changing a digit.

It is a nontrivial repunit in base 628.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65833 + ... + 65838.

It is an arithmetic number, because the mean of its divisors is an integer number (131672).

2395013 is an apocalyptic number.

It is an amenable number.

395013 is a deficient number, since it is larger than the sum of its proper divisors (131675).

395013 is a wasteful number, since it uses less digits than its factorization.

395013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131674.

The product of its (nonzero) digits is 405, while the sum is 21.

The square root of 395013 is about 628.5005966584. The cubic root of 395013 is about 73.3731441322.

The spelling of 395013 in words is "three hundred ninety-five thousand, thirteen".

Divisors: 1 3 131671 395013