140399 has 8 divisors (see below), whose sum is σ = 165888. Its totient is φ = 116280.

The previous prime is 140381. The next prime is 140401. The reversal of 140399 is 993041.

It is a happy number.

140399 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 140399 - 2⁸ = 140143 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 140399.

It is not an unprimeable number, because it can be changed into a prime (140339) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107 + ... + 540.

It is an arithmetic number, because the mean of its divisors is an integer number (20736).

2¹⁴⁰³⁹⁹ is an apocalyptic number.

140399 is a deficient number, since it is larger than the sum of its proper divisors (25489).

140399 is an equidigital number, since it uses as much as digits as its factorization.

140399 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 685.

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

The square root of 140399 is about 374.6985455002. The cubic root of 140399 is about 51.9742229243.

The spelling of 140399 in words is "one hundred forty thousand, three hundred ninety-nine".