4431225839891 has 4 divisors (see below), whose sum is σ = 4691886183432. Its totient is φ = 4170565496352.

The previous prime is 4431225839791. The next prime is 4431225839893. The reversal of 4431225839891 is 1989385221344.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4431225839891 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4431225839891.

It is not an unprimeable number, because it can be changed into a prime (4431225839893) 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, 130330171745 + ... + 130330171778.

It is an arithmetic number, because the mean of its divisors is an integer number (1172971545858).

Almost surely, 2^{4431225839891} is an apocalyptic number.

4431225839891 is a deficient number, since it is larger than the sum of its proper divisors (260660343541).

4431225839891 is a wasteful number, since it uses less digits than its factorization.

4431225839891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260660343540.

The product of its digits is 14929920, while the sum is 59.

The spelling of 4431225839891 in words is "four trillion, four hundred thirty-one billion, two hundred twenty-five million, eight hundred thirty-nine thousand, eight hundred ninety-one".