999996913 has 2 divisors, whose sum is σ = 999996914. Its totient is φ = 999996912.

The previous prime is 999996901. The next prime is 999996919. The reversal of 999996913 is 319699999.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 573698304 + 426298609 = 23952^2 + 20647^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-999996913 is a prime.

It is not a weakly prime, because it can be changed into another prime (999996919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499998456 + 499998457.

It is an arithmetic number, because the mean of its divisors is an integer number (499998457).

Almost surely, 2^999996913 is an apocalyptic number.

It is an amenable number.

999996913 is a deficient number, since it is larger than the sum of its proper divisors (1).

999996913 is an equidigital number, since it uses as much as digits as its factorization.

999996913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9565938, while the sum is 64.

The square root of 999996913 is about 31622.7277918904. The cubic root of 999996913 is about 999.9989709989.

The spelling of 999996913 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, nine hundred thirteen".