999849311 has 2 divisors, whose sum is σ = 999849312. Its totient is φ = 999849310.

The previous prime is 999849299. The next prime is 999849313. The reversal of 999849311 is 113948999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 999849311 - 2¹⁰ = 999848287 is a prime.

Together with 999849313, 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 (999849313) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499924655 + 499924656.

It is an arithmetic number, because the mean of its divisors is an integer number (499924656).

Almost surely, 2^999849311 is an apocalyptic number.

999849311 is a deficient number, since it is larger than the sum of its proper divisors (1).

999849311 is an equidigital number, since it uses as much as digits as its factorization.

999849311 is an evil number, because the sum of its binary digits is even.

The product of its digits is 629856, while the sum is 53.

The square root of 999849311 is about 31620.3939096274. The cubic root of 999849311 is about 999.9497678101.

The spelling of 999849311 in words is "nine hundred ninety-nine million, eight hundred forty-nine thousand, three hundred eleven".