823379446987 has 8 divisors (see below), whose sum is σ = 827723980800. Its totient is φ = 819035264040.

The previous prime is 823379446969. The next prime is 823379446999. The reversal of 823379446987 is 789644973328.

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 a de Polignac number, because none of the positive numbers 2^k-823379446987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (823379446927) 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, 5580588 + ... + 5726230.

It is an arithmetic number, because the mean of its divisors is an integer number (103465497600).

Almost surely, 2^823379446987 is an apocalyptic number.

823379446987 is a deficient number, since it is larger than the sum of its proper divisors (4344533813).

823379446987 is a wasteful number, since it uses less digits than its factorization.

823379446987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175433.

The product of its digits is 438939648, while the sum is 70.

The spelling of 823379446987 in words is "eight hundred twenty-three billion, three hundred seventy-nine million, four hundred forty-six thousand, nine hundred eighty-seven".