999434999 has 2 divisors, whose sum is σ = 999435000.
Its totient is φ = 999434998.
The previous prime is 999434963. The next prime is 999435001.
999434999 is nontrivially palindromic in base 10.
It is a strong prime.
It is a palprime.
It is a cyclic number.
It is not a de Polignac number, because 999434999 - 228 = 730999543 is a prime.
It is a super-2 number, since 2×9994349992 = 1997740634452260002, which contains 22 as substring.
Together with 999435001, it forms a pair of twin primes.
It is a Chen prime.
It is a congruent number.
It is not a weakly prime, because it can be changed into another prime (999434929) by changing a digit.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499717499 + 499717500.
It is an arithmetic number, because the mean of its divisors is an integer number (499717500).
Almost surely, 2999434999 is an apocalyptic number.
999434999 is a deficient number, since it is larger than the sum of its proper divisors (1).
999434999 is an equidigital number, since it uses as much as digits as its factorization.
999434999 is an evil number, because the sum of its binary digits is even.
The product of its digits is 25509168, while the sum is 65.
The square root of 999434999 is about 31613.8418892738.
The cubic root of 999434999 is about 999.8116308526.
The spelling of 999434999 in words is "nine hundred ninety-nine million, four hundred thirty-four thousand, nine hundred ninety-nine".