140993 has 4 divisors (see below), whose sum is σ = 141780. Its totient is φ = 140208.

The previous prime is 140989. The next prime is 141023. The reversal of 140993 is 399041.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 399041 = 17 ⋅23473.

It can be written as a sum of positive squares in 2 ways, for example, as 69169 + 71824 = 263^2 + 268^2 .

It is a cyclic number.

It is not a de Polignac number, because 140993 - 2² = 140989 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (140983) 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 3 ways as a sum of consecutive naturals, for example, 23 + ... + 531.

It is an arithmetic number, because the mean of its divisors is an integer number (35445).

2¹⁴⁰⁹⁹³ is an apocalyptic number.

It is an amenable number.

140993 is a deficient number, since it is larger than the sum of its proper divisors (787).

140993 is an equidigital number, since it uses as much as digits as its factorization.

140993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 140993 is about 375.4903460810. The cubic root of 140993 is about 52.0474173007.

The spelling of 140993 in words is "one hundred forty thousand, nine hundred ninety-three".