999994999999 has 2 divisors, whose sum is σ = 999995000000. Its totient is φ = 999994999998.

The previous prime is 999994999979. The next prime is 999995000009. The reversal of 999994999999 is 999999499999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999994999999 is a prime.

999994999999 is a modest number, since divided by 999999 gives 999994 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 999994999898 and 999994999907.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (999994999919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499997499999 + 499997500000.

It is an arithmetic number, because the mean of its divisors is an integer number (499997500000).

Almost surely, 2^999994999999 is an apocalyptic number.

999994999999 is a deficient number, since it is larger than the sum of its proper divisors (1).

999994999999 is an equidigital number, since it uses as much as digits as its factorization.

999994999999 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 125524238436, while the sum is 103.

The spelling of 999994999999 in words is "nine hundred ninety-nine billion, nine hundred ninety-four million, nine hundred ninety-nine thousand, nine hundred ninety-nine".