107209 has 2 divisors, whose sum is σ = 107210. Its totient is φ = 107208.
The previous prime is 107201. The next prime is 107227. The reversal of 107209 is 902701.
It is a weak prime.
It can be written as a sum of positive squares in only one way, i.e., 55225 + 51984 = 235^2 + 228^2 .
It is a cyclic number.
It is not a de Polignac number, because 107209 - 23 = 107201 is a prime.
It is a super-2 number, since 2×1072092 = 22987539362, which contains 22 as substring.
It is not a weakly prime, because it can be changed into another prime (107201) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53604 + 53605.
It is an arithmetic number, because the mean of its divisors is an integer number (53605).
2107209 is an apocalyptic number.
It is an amenable number.
107209 is a deficient number, since it is larger than the sum of its proper divisors (1).
107209 is an equidigital number, since it uses as much as digits as its factorization.
107209 is an evil number, because the sum of its binary digits is even.
The product of its (nonzero) digits is 126, while the sum is 19.
The square root of 107209 is about 327.4278546489. The cubic root of 107209 is about 47.5054841313.
The spelling of 107209 in words is "one hundred seven thousand, two hundred nine".
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