140897 has 2 divisors, whose sum is σ = 140898. Its totient is φ = 140896.

The previous prime is 140893. The next prime is 140909. The reversal of 140897 is 798041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126736 + 14161 = 356^2 + 119^2 .

It is a cyclic number.

It is not a de Polignac number, because 140897 - 2² = 140893 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140891) 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, 70448 + 70449.

It is an arithmetic number, because the mean of its divisors is an integer number (70449).

2¹⁴⁰⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

140897 is a deficient number, since it is larger than the sum of its proper divisors (1).

140897 is an equidigital number, since it uses as much as digits as its factorization.

140897 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 140897 is about 375.3624914666. The cubic root of 140897 is about 52.0356018523.

The spelling of 140897 in words is "one hundred forty thousand, eight hundred ninety-seven".