109897 has 2 divisors, whose sum is σ = 109898. Its totient is φ = 109896.

The previous prime is 109891. The next prime is 109903. The reversal of 109897 is 798901.

It is a balanced prime because it is at equal distance from previous prime (109891) and next prime (109903).

It can be written as a sum of positive squares in only one way, i.e., 80656 + 29241 = 284^2 + 171^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-109897 is a prime.

It is not a weakly prime, because it can be changed into another prime (109891) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 54948 + 54949.

It is an arithmetic number, because the mean of its divisors is an integer number (54949).

2¹⁰⁹⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

109897 is a deficient number, since it is larger than the sum of its proper divisors (1).

109897 is an equidigital number, since it uses as much as digits as its factorization.

109897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 109897 is about 331.5071643268. The cubic root of 109897 is about 47.8992388627.

The spelling of 109897 in words is "one hundred nine thousand, eight hundred ninety-seven".