140989 has 2 divisors, whose sum is σ = 140990. Its totient is φ = 140988.

The previous prime is 140983. The next prime is 141023. The reversal of 140989 is 989041.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 116964 + 24025 = 342^2 + 155^2 .

It is a cyclic number.

It is not a de Polignac number, because 140989 - 2⁹ = 140477 is a prime.

It is a Chen prime.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 140989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (140983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 70494 + 70495.

It is an arithmetic number, because the mean of its divisors is an integer number (70495).

2¹⁴⁰⁹⁸⁹ is an apocalyptic number.

It is an amenable number.

140989 is a deficient number, since it is larger than the sum of its proper divisors (1).

140989 is an equidigital number, since it uses as much as digits as its factorization.

140989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 140989 is about 375.4850196746. The cubic root of 140989 is about 52.0469250974.

The spelling of 140989 in words is "one hundred forty thousand, nine hundred eighty-nine".