999906575879 has 2 divisors, whose sum is σ = 999906575880. Its totient is φ = 999906575878.

The previous prime is 999906575869. The next prime is 999906575911. The reversal of 999906575879 is 978575609999.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999906575879 is a prime.

It is a pancake number, because a pancake can be divided into 999906575879 parts by 1414147 straight cuts.

It is a junction number, because it is equal to n+sod(n) for n = 999906575797 and 999906575806.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999906575809) 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, 499953287939 + 499953287940.

It is an arithmetic number, because the mean of its divisors is an integer number (499953287940).

Almost surely, 2^999906575879 is an apocalyptic number.

999906575879 is a deficient number, since it is larger than the sum of its proper divisors (1).

999906575879 is an equidigital number, since it uses as much as digits as its factorization.

999906575879 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3472081200, while the sum is 83.

The spelling of 999906575879 in words is "nine hundred ninety-nine billion, nine hundred six million, five hundred seventy-five thousand, eight hundred seventy-nine".