140003447 has 4 divisors (see below), whose sum is σ = 140092176. Its totient is φ = 139914720.

The previous prime is 140003431. The next prime is 140003477. The reversal of 140003447 is 744300041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 140003447 - 2⁴ = 140003431 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 (140003477) 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, 41954 + ... + 45167.

It is an arithmetic number, because the mean of its divisors is an integer number (35023044).

Almost surely, 2^140003447 is an apocalyptic number.

140003447 is a deficient number, since it is larger than the sum of its proper divisors (88729).

140003447 is an equidigital number, since it uses as much as digits as its factorization.

140003447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88728.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 140003447 is about 11832.3052276384. The cubic root of 140003447 is about 519.2536717042.

Adding to 140003447 its reverse (744300041), we get a palindrome (884303488).

The spelling of 140003447 in words is "one hundred forty million, three thousand, four hundred forty-seven".