999973069 has 2 divisors, whose sum is σ = 999973070. Its totient is φ = 999973068.

The previous prime is 999973033. The next prime is 999973087. The reversal of 999973069 is 960379999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 984076900 + 15896169 = 31370^2 + 3987^2 .

It is a cyclic number.

It is not a de Polignac number, because 999973069 - 2⁹ = 999972557 is a prime.

It is a super-2 number, since 2×999973069² = 1999892277450557522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 999972998 and 999973016.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999974069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499986534 + 499986535.

It is an arithmetic number, because the mean of its divisors is an integer number (499986535).

Almost surely, 2^999973069 is an apocalyptic number.

It is an amenable number.

999973069 is a deficient number, since it is larger than the sum of its proper divisors (1).

999973069 is an equidigital number, since it uses as much as digits as its factorization.

999973069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7440174, while the sum is 61.

The square root of 999973069 is about 31622.3507823185. The cubic root of 999973069 is about 999.9910229194.

The spelling of 999973069 in words is "nine hundred ninety-nine million, nine hundred seventy-three thousand, sixty-nine".