440430143 has 4 divisors (see below), whose sum is σ = 443386200. Its totient is φ = 437474088.

The previous prime is 440430073. The next prime is 440430161. The reversal of 440430143 is 341034044.

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 440430143 - 2⁸ = 440429887 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 (440430173) 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, 1477805 + ... + 1478102.

It is an arithmetic number, because the mean of its divisors is an integer number (110846550).

Almost surely, 2^440430143 is an apocalyptic number.

440430143 is a deficient number, since it is larger than the sum of its proper divisors (2956057).

440430143 is a wasteful number, since it uses less digits than its factorization.

440430143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2956056.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 440430143 is about 20986.4275902308. The cubic root of 440430143 is about 760.8382619423.

Adding to 440430143 its reverse (341034044), we get a palindrome (781464187).

The spelling of 440430143 in words is "four hundred forty million, four hundred thirty thousand, one hundred forty-three".