441821979455 has 4 divisors (see below), whose sum is σ = 530186375352. Its totient is φ = 353457583560.

The previous prime is 441821979449. The next prime is 441821979461. The reversal of 441821979455 is 554979128144.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (441821979449) and next prime (441821979461).

It is not a de Polignac number, because 441821979455 - 2²² = 441817785151 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 441821979394 and 441821979403.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44182197941 + ... + 44182197950.

It is an arithmetic number, because the mean of its divisors is an integer number (132546593838).

Almost surely, 2^441821979455 is an apocalyptic number.

441821979455 is a deficient number, since it is larger than the sum of its proper divisors (88364395897).

441821979455 is an equidigital number, since it uses as much as digits as its factorization.

441821979455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88364395896.

The product of its digits is 14515200, while the sum is 59.

The spelling of 441821979455 in words is "four hundred forty-one billion, eight hundred twenty-one million, nine hundred seventy-nine thousand, four hundred fifty-five".