4431441345 has 32 divisors (see below), whose sum is σ = 7665214080. Its totient is φ = 2178524160.

The previous prime is 4431441341. The next prime is 4431441361. The reversal of 4431441345 is 5431441344.

It is not a de Polignac number, because 4431441345 - 2² = 4431441341 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4431441341) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 199576 + ... + 220665.

It is an arithmetic number, because the mean of its divisors is an integer number (239537940).

Almost surely, 2^4431441345 is an apocalyptic number.

It is an amenable number.

4431441345 is a deficient number, since it is larger than the sum of its proper divisors (3233772735).

4431441345 is a wasteful number, since it uses less digits than its factorization.

4431441345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420305.

The product of its digits is 46080, while the sum is 33.

The square root of 4431441345 is about 66569.0719854198. The cubic root of 4431441345 is about 1642.5363965904.

Adding to 4431441345 its reverse (5431441344), we get a palindrome (9862882689).

Subtracting 4431441345 from its reverse (5431441344), we obtain a palindrome (999999999).

The spelling of 4431441345 in words is "four billion, four hundred thirty-one million, four hundred forty-one thousand, three hundred forty-five".