440143145 has 16 divisors (see below), whose sum is σ = 569739072. Its totient is φ = 324492480.

The previous prime is 440143139. The next prime is 440143147. The reversal of 440143145 is 541341044.

It is a happy number.

It is not a de Polignac number, because 440143145 - 2¹⁴ = 440126761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (440143147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36530 + ... + 47060.

It is an arithmetic number, because the mean of its divisors is an integer number (35608692).

Almost surely, 2^440143145 is an apocalyptic number.

It is an amenable number.

440143145 is a deficient number, since it is larger than the sum of its proper divisors (129595927).

440143145 is a wasteful number, since it uses less digits than its factorization.

440143145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11192.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 440143145 is about 20979.5887709936. The cubic root of 440143145 is about 760.6729640624.

Adding to 440143145 its reverse (541341044), we get a palindrome (981484189).

The spelling of 440143145 in words is "four hundred forty million, one hundred forty-three thousand, one hundred forty-five".