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830995953 = 31979139969
BaseRepresentation
bin110001100001111…
…111110111110001
32010220122222010220
4301201333313301
53200213332303
6214243043253
726410230504
oct6141776761
92126588126
10830995953
11397091617
121b2370529
131032162a8
147c51713b
154ce4b053
hex3187fdf1

830995953 has 8 divisors (see below), whose sum is σ = 1108562400. Its totient is φ = 553713408.

The previous prime is 830995939. The next prime is 830995967. The reversal of 830995953 is 359599038.

It is an interprime number because it is at equal distance from previous prime (830995939) and next prime (830995967).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 830995953 - 225 = 797441521 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 830995896 and 830995905.

It is not an unprimeable number, because it can be changed into a prime (830995973) 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 7 ways as a sum of consecutive naturals, for example, 64048 + ... + 75921.

It is an arithmetic number, because the mean of its divisors is an integer number (138570300).

Almost surely, 2830995953 is an apocalyptic number.

It is an amenable number.

830995953 is a deficient number, since it is larger than the sum of its proper divisors (277566447).

830995953 is a wasteful number, since it uses less digits than its factorization.

830995953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141951.

The product of its (nonzero) digits is 1312200, while the sum is 51.

The square root of 830995953 is about 28827.0004162764. Note that the first 3 decimals coincide. The cubic root of 830995953 is about 940.1553813611.

The spelling of 830995953 in words is "eight hundred thirty million, nine hundred ninety-five thousand, nine hundred fifty-three".

Divisors: 1 3 1979 5937 139969 419907 276998651 830995953