844451154449 has 8 divisors (see below), whose sum is σ = 965124133248. Its totient is φ = 723787450560.

The previous prime is 844451154439. The next prime is 844451154473. The reversal of 844451154449 is 944451154448.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 844451154449 - 2²⁸ = 844182718993 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 844451154449.

It is not an unprimeable number, because it can be changed into a prime (844451154439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2122517 + ... + 2488770.

It is an arithmetic number, because the mean of its divisors is an integer number (120640516656).

Almost surely, 2^844451154449 is an apocalyptic number.

It is an amenable number.

844451154449 is a deficient number, since it is larger than the sum of its proper divisors (120672978799).

844451154449 is a wasteful number, since it uses less digits than its factorization.

844451154449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4637455.

The product of its digits is 7372800, while the sum is 53.

Subtracting 844451154449 from its reverse (944451154448), we obtain a palindrome (99999999999).

The spelling of 844451154449 in words is "eight hundred forty-four billion, four hundred fifty-one million, one hundred fifty-four thousand, four hundred forty-nine".