855552444479 has 4 divisors (see below), whose sum is σ = 855558393984. Its totient is φ = 855546494976.

The previous prime is 855552444469. The next prime is 855552444497. The reversal of 855552444479 is 974444255558.

It is a happy number.

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-855552444479 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 (855552444469) 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, 2753567 + ... + 3048480.

It is an arithmetic number, because the mean of its divisors is an integer number (213889598496).

Almost surely, 2^855552444479 is an apocalyptic number.

855552444479 is a deficient number, since it is larger than the sum of its proper divisors (5949505).

855552444479 is a wasteful number, since it uses less digits than its factorization.

855552444479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5949504.

The product of its digits is 161280000, while the sum is 62.

It can be divided in two parts, 855552 and 444479, that added together give a palindrome (1300031).

The spelling of 855552444479 in words is "eight hundred fifty-five billion, five hundred fifty-two million, four hundred forty-four thousand, four hundred seventy-nine".