999369441971 has 16 divisors (see below), whose sum is σ = 1078215681024. Its totient is φ = 922755185664.

The previous prime is 999369441949. The next prime is 999369441991. The reversal of 999369441971 is 179144963999.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999369441971 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 999369441895 and 999369441904.

It is not an unprimeable number, because it can be changed into a prime (999369441911) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11835815 + ... + 11919951.

It is an arithmetic number, because the mean of its divisors is an integer number (67388480064).

Almost surely, 2^999369441971 is an apocalyptic number.

999369441971 is a deficient number, since it is larger than the sum of its proper divisors (78846239053).

999369441971 is a wasteful number, since it uses less digits than its factorization.

999369441971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97390.

The product of its digits is 119042784, while the sum is 71.

The spelling of 999369441971 in words is "nine hundred ninety-nine billion, three hundred sixty-nine million, four hundred forty-one thousand, nine hundred seventy-one".