140389 has 8 divisors (see below), whose sum is σ = 149760. Its totient is φ = 131376.

The previous prime is 140381. The next prime is 140401. The reversal of 140389 is 983041.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 140389 - 2³ = 140381 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140381) 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 in 7 ways as a sum of consecutive naturals, for example, 1312 + ... + 1414.

It is an arithmetic number, because the mean of its divisors is an integer number (18720).

2¹⁴⁰³⁸⁹ is an apocalyptic number.

It is an amenable number.

140389 is a deficient number, since it is larger than the sum of its proper divisors (9371).

140389 is a wasteful number, since it uses less digits than its factorization.

140389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 140389 is about 374.6852012023. The cubic root of 140389 is about 51.9729889303.

It can be divided in two parts, 140 and 389, that added together give a square (529 = 23²).

The spelling of 140389 in words is "one hundred forty thousand, three hundred eighty-nine".