140397 has 8 divisors (see below), whose sum is σ = 190944. Its totient is φ = 91728.

The previous prime is 140381. The next prime is 140401. The reversal of 140397 is 793041.

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

It is not a de Polignac number, because 140397 - 2⁴ = 140381 is a prime.

It is a super-2 number, since 2×140397² = 39422635218, which contains 22 as substring.

140397 is a lucky 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 140397.

It is not an unprimeable number, because it can be changed into a prime (140317) 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, 283 + ... + 600.

It is an arithmetic number, because the mean of its divisors is an integer number (23868).

2¹⁴⁰³⁹⁷ is an apocalyptic number.

It is an amenable number.

140397 is a deficient number, since it is larger than the sum of its proper divisors (50547).

140397 is an equidigital number, since it uses as much as digits as its factorization.

140397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 939.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 140397 is about 374.6958766787. The cubic root of 140397 is about 51.9739761302.

The spelling of 140397 in words is "one hundred forty thousand, three hundred ninety-seven".