8400880844479 has 2 divisors, whose sum is σ = 8400880844480. Its totient is φ = 8400880844478.

The previous prime is 8400880844471. The next prime is 8400880844533. The reversal of 8400880844479 is 9744480880048.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 8400880844479 - 2³ = 8400880844471 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8400880844479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8400880844471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4200440422239 + 4200440422240.

It is an arithmetic number, because the mean of its divisors is an integer number (4200440422240).

Almost surely, 2^{8400880844479} is an apocalyptic number.

8400880844479 is a deficient number, since it is larger than the sum of its proper divisors (1).

8400880844479 is an equidigital number, since it uses as much as digits as its factorization.

8400880844479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 66060288, while the sum is 64.

The spelling of 8400880844479 in words is "eight trillion, four hundred billion, eight hundred eighty million, eight hundred forty-four thousand, four hundred seventy-nine".