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395438061 = 3131812687
BaseRepresentation
bin10111100100011…
…110011111101101
31000120002100001010
4113210132133231
51302213004221
6103123335433
712541111434
oct2744363755
91016070033
10395438061
1119323a517
12b0521579
1363c05025
143a73811b
1524ab1c76
hex1791e7ed

395438061 has 4 divisors (see below), whose sum is σ = 527250752. Its totient is φ = 263625372.

The previous prime is 395438059. The next prime is 395438063. The reversal of 395438061 is 160834593.

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 an interprime number because it is at equal distance from previous prime (395438059) and next prime (395438063).

It is not a de Polignac number, because 395438061 - 21 = 395438059 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395438063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65906341 + ... + 65906346.

It is an arithmetic number, because the mean of its divisors is an integer number (131812688).

Almost surely, 2395438061 is an apocalyptic number.

It is an amenable number.

395438061 is a deficient number, since it is larger than the sum of its proper divisors (131812691).

395438061 is a wasteful number, since it uses less digits than its factorization.

395438061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131812690.

The product of its (nonzero) digits is 77760, while the sum is 39.

The square root of 395438061 is about 19885.6244810164. The cubic root of 395438061 is about 733.9945287131.

The spelling of 395438061 in words is "three hundred ninety-five million, four hundred thirty-eight thousand, sixty-one".

Divisors: 1 3 131812687 395438061