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199999953 = 32151367401
BaseRepresentation
bin10111110101111…
…00000111010001
3111221100001100200
423322330013101
5402144444303
631502405413
74645654146
oct1372740721
9457301320
10199999953
11a2992a1a
1256b90869
133258728a
141c7c23cd
15128593a3
hexbebc1d1

199999953 has 24 divisors (see below), whose sum is σ = 292321536. Its totient is φ = 131760000.

The previous prime is 199999949. The next prime is 199999957. The reversal of 199999953 is 359999991.

It is an interprime number because it is at equal distance from previous prime (199999949) and next prime (199999957).

It is not a de Polignac number, because 199999953 - 22 = 199999949 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (199999957) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 498553 + ... + 498953.

It is an arithmetic number, because the mean of its divisors is an integer number (12180064).

Almost surely, 2199999953 is an apocalyptic number.

It is an amenable number.

199999953 is a deficient number, since it is larger than the sum of its proper divisors (92321583).

199999953 is a wasteful number, since it uses less digits than its factorization.

199999953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 925 (or 922 counting only the distinct ones).

The product of its digits is 7971615, while the sum is 63.

The square root of 199999953 is about 14142.1339620299. The cubic root of 199999953 is about 584.8035018330.

The spelling of 199999953 in words is "one hundred ninety-nine million, nine hundred ninety-nine thousand, nine hundred fifty-three".

Divisors: 1 3 9 151 367 401 453 1101 1203 1359 3303 3609 55417 60551 147167 166251 181653 441501 498753 544959 1324503 22222217 66666651 199999953