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395070493 = 647610619
BaseRepresentation
bin10111100011000…
…100110000011101
31000112101122211111
4113203010300131
51302114223433
6103111422021
712535021006
oct2743046035
91015348744
10395070493
11193009344
12b0384911
1363b0692c
143a6801ad
1524a3cdcd
hex178c4c1d

395070493 has 4 divisors (see below), whose sum is σ = 395681760. Its totient is φ = 394459228.

The previous prime is 395070469. The next prime is 395070503. The reversal of 395070493 is 394070593.

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 a cyclic number.

It is not a de Polignac number, because 395070493 - 213 = 395062301 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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 (395070433) 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, 304663 + ... + 305956.

It is an arithmetic number, because the mean of its divisors is an integer number (98920440).

Almost surely, 2395070493 is an apocalyptic number.

It is an amenable number.

395070493 is a deficient number, since it is larger than the sum of its proper divisors (611267).

395070493 is an equidigital number, since it uses as much as digits as its factorization.

395070493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611266.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 395070493 is about 19876.3802791152. The cubic root of 395070493 is about 733.7670370918.

The spelling of 395070493 in words is "three hundred ninety-five million, seventy thousand, four hundred ninety-three".

Divisors: 1 647 610619 395070493