999988654090039 has 2 divisors, whose sum is σ = 999988654090040. Its totient is φ = 999988654090038.

The previous prime is 999988654090003. The next prime is 999988654090067. The reversal of 999988654090039 is 930090456889999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999988654090039 - 2¹¹ = 999988654087991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999988654090639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499994327045019 + 499994327045020.

It is an arithmetic number, because the mean of its divisors is an integer number (499994327045020).

Almost surely, 2^{999988654090039} is an apocalyptic number.

999988654090039 is a deficient number, since it is larger than the sum of its proper divisors (1).

999988654090039 is an equidigital number, since it uses as much as digits as its factorization.

999988654090039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12244400640, while the sum is 88.

The spelling of 999988654090039 in words is "nine hundred ninety-nine trillion, nine hundred eighty-eight billion, six hundred fifty-four million, ninety thousand, thirty-nine".