999044999969 has 2 divisors, whose sum is σ = 999044999970. Its totient is φ = 999044999968.

The previous prime is 999044999837. The next prime is 999045000047. The reversal of 999044999969 is 969999440999.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 684817486369 + 314227513600 = 827537^2 + 560560^2 .

It is a cyclic number.

It is not a de Polignac number, because 999044999969 - 2³⁶ = 930325523233 is a prime.

It is a super-3 number, since 3×999044999969³ (a number of 37 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (999044995969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499522499984 + 499522499985.

It is an arithmetic number, because the mean of its divisors is an integer number (499522499985).

Almost surely, 2^999044999969 is an apocalyptic number.

It is an amenable number.

999044999969 is a deficient number, since it is larger than the sum of its proper divisors (1).

999044999969 is an equidigital number, since it uses as much as digits as its factorization.

999044999969 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4132485216, while the sum is 86.

The spelling of 999044999969 in words is "nine hundred ninety-nine billion, forty-four million, nine hundred ninety-nine thousand, nine hundred sixty-nine".