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BaseRepresentation
bin111001011000000001
3102221101001
4321120001
530010014
65012001
71666105
oct713001
9387331
10235009
11150625
12b4001
1382c78
1461905
1549974
hex39601

235009 has 2 divisors, whose sum is σ = 235010. Its totient is φ = 235008.

The previous prime is 235007. The next prime is 235013. The reversal of 235009 is 900532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 211600 + 23409 = 460^2 + 153^2 .

It is a cyclic number.

It is not a de Polignac number, because 235009 - 21 = 235007 is a prime.

Together with 235007, it forms a pair of twin primes.

It is equal to p20836 and since 235009 and 20836 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (235003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117504 + 117505.

It is an arithmetic number, because the mean of its divisors is an integer number (117505).

It is a Proth number, since it is equal to 459 ⋅ 29 + 1 and 459 < 29.

2235009 is an apocalyptic number.

It is an amenable number.

235009 is a deficient number, since it is larger than the sum of its proper divisors (1).

235009 is an equidigital number, since it uses as much as digits as its factorization.

235009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 270, while the sum is 19.

The square root of 235009 is about 484.7772684440. Note that the first 3 decimals coincide. The cubic root of 235009 is about 61.7108457057.

The spelling of 235009 in words is "two hundred thirty-five thousand, nine".