140449343 has 4 divisors (see below), whose sum is σ = 140478168. Its totient is φ = 140420520.

The previous prime is 140449321. The next prime is 140449433. The reversal of 140449343 is 343944041.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343944041 = 7 ⋅49134863.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-140449343 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 (140449943) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5096 + ... + 17517.

It is an arithmetic number, because the mean of its divisors is an integer number (35119542).

Almost surely, 2^140449343 is an apocalyptic number.

140449343 is a deficient number, since it is larger than the sum of its proper divisors (28825).

140449343 is an equidigital number, since it uses as much as digits as its factorization.

140449343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28824.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 140449343 is about 11851.1325619115. The cubic root of 140449343 is about 519.8043433041.

The spelling of 140449343 in words is "one hundred forty million, four hundred forty-nine thousand, three hundred forty-three".