999993061 has 2 divisors, whose sum is σ = 999993062. Its totient is φ = 999993060.

The previous prime is 999993041. The next prime is 999993067. The reversal of 999993061 is 160399999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 779470561 + 220522500 = 27919^2 + 14850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999993061 is a prime.

It is a super-3 number, since 3×999993061³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 999992993 and 999993011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999993067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499996530 + 499996531.

It is an arithmetic number, because the mean of its divisors is an integer number (499996531).

Almost surely, 2^999993061 is an apocalyptic number.

It is an amenable number.

999993061 is a deficient number, since it is larger than the sum of its proper divisors (1).

999993061 is an equidigital number, since it uses as much as digits as its factorization.

999993061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1062882, while the sum is 55.

The square root of 999993061 is about 31622.6668862700. Note that the first 3 decimals coincide. The cubic root of 999993061 is about 999.9976869947.

The spelling of 999993061 in words is "nine hundred ninety-nine million, nine hundred ninety-three thousand, sixty-one".