999003913 has 2 divisors, whose sum is σ = 999003914. Its totient is φ = 999003912.

The previous prime is 999003839. The next prime is 999003931. The reversal of 999003913 is 319300999.

Together with next prime (999003931) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 501401664 + 497602249 = 22392^2 + 22307^2 .

It is a cyclic number.

It is not a de Polignac number, because 999003913 - 2¹⁷ = 998872841 is a prime.

It is equal to p_50799760 and since 999003913 and 50799760 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 999003913.

It is not a weakly prime, because it can be changed into another prime (999003953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499501956 + 499501957.

It is an arithmetic number, because the mean of its divisors is an integer number (499501957).

Almost surely, 2^999003913 is an apocalyptic number.

It is an amenable number.

999003913 is a deficient number, since it is larger than the sum of its proper divisors (1).

999003913 is an equidigital number, since it uses as much as digits as its factorization.

999003913 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 999003913 is about 31607.0231594182. The cubic root of 999003913 is about 999.6678606957.

The spelling of 999003913 in words is "nine hundred ninety-nine million, three thousand, nine hundred thirteen".