140891 has 2 divisors, whose sum is σ = 140892. Its totient is φ = 140890.

The previous prime is 140869. The next prime is 140893. The reversal of 140891 is 198041.

140891 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 140891 - 2⁶ = 140827 is a prime.

It is a Sophie Germain prime.

Together with 140893, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (140893) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70445 + 70446.

It is an arithmetic number, because the mean of its divisors is an integer number (70446).

2¹⁴⁰⁸⁹¹ is an apocalyptic number.

140891 is a deficient number, since it is larger than the sum of its proper divisors (1).

140891 is an equidigital number, since it uses as much as digits as its factorization.

140891 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 140891 is about 375.3544991072. The cubic root of 140891 is about 52.0348632086.

The spelling of 140891 in words is "one hundred forty thousand, eight hundred ninety-one".