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395299807 = 7219424597
BaseRepresentation
bin10111100011111…
…100101111011111
31000112211022101121
4113203330233133
51302144043212
6103120351411
712536664400
oct2743745737
91015738347
10395299807
11193155661
12b0475567
1363b87116
143a6dd9a7
1524a85d07
hex178fcbdf

395299807 has 12 divisors (see below), whose sum is σ = 484041720. Its totient is φ = 320994576.

The previous prime is 395299789. The next prime is 395299829. The reversal of 395299807 is 708992593.

It is not a de Polignac number, because 395299807 - 223 = 386911199 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395299847) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 211368 + ... + 213229.

It is an arithmetic number, because the mean of its divisors is an integer number (40336810).

Almost surely, 2395299807 is an apocalyptic number.

395299807 is a deficient number, since it is larger than the sum of its proper divisors (88741913).

395299807 is a wasteful number, since it uses less digits than its factorization.

395299807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 424630 (or 424623 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 52.

The square root of 395299807 is about 19882.1479473421. The cubic root of 395299807 is about 733.9089784351.

The spelling of 395299807 in words is "three hundred ninety-five million, two hundred ninety-nine thousand, eight hundred seven".

Divisors: 1 7 19 49 133 931 424597 2972179 8067343 20805253 56471401 395299807