999584969 has 2 divisors, whose sum is σ = 999584970. Its totient is φ = 999584968.

The previous prime is 999584947. The next prime is 999584977. The reversal of 999584969 is 969485999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 671431744 + 328153225 = 25912^2 + 18115^2 .

It is a cyclic number.

It is not a de Polignac number, because 999584969 - 2¹² = 999580873 is a prime.

It is a super-2 number, since 2×999584969² = 1998340220501461922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999584899 and 999584908.

It is not a weakly prime, because it can be changed into another prime (999584909) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499792484 + 499792485.

It is an arithmetic number, because the mean of its divisors is an integer number (499792485).

Almost surely, 2^999584969 is an apocalyptic number.

It is an amenable number.

999584969 is a deficient number, since it is larger than the sum of its proper divisors (1).

999584969 is an equidigital number, since it uses as much as digits as its factorization.

999584969 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56687040, while the sum is 68.

The square root of 999584969 is about 31616.2137043638. The cubic root of 999584969 is about 999.8616371899.

The spelling of 999584969 in words is "nine hundred ninety-nine million, five hundred eighty-four thousand, nine hundred sixty-nine".