999792791 has 2 divisors, whose sum is σ = 999792792. Its totient is φ = 999792790.

The previous prime is 999792757. The next prime is 999792793. The reversal of 999792791 is 197297999.

It is a strong prime.

It is an emirp because it is prime and its reverse (197297999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 999792791 - 2¹⁸ = 999530647 is a prime.

Together with 999792793, 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 (999792793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 499896395 + 499896396.

It is an arithmetic number, because the mean of its divisors is an integer number (499896396).

Almost surely, 2^999792791 is an apocalyptic number.

999792791 is a deficient number, since it is larger than the sum of its proper divisors (1).

999792791 is an equidigital number, since it uses as much as digits as its factorization.

999792791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5786802, while the sum is 62.

The square root of 999792791 is about 31619.5001699900. The cubic root of 999792791 is about 999.9309255622.

The spelling of 999792791 in words is "nine hundred ninety-nine million, seven hundred ninety-two thousand, seven hundred ninety-one".