791918929 has 2 divisors, whose sum is σ = 791918930. Its totient is φ = 791918928.

The previous prime is 791918927. The next prime is 791918947. The reversal of 791918929 is 929819197.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 621355329 + 170563600 = 24927^2 + 13060^2 .

It is a cyclic number.

It is not a de Polignac number, because 791918929 - 2¹ = 791918927 is a prime.

Together with 791918927, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 791918929.

It is not a weakly prime, because it can be changed into another prime (791918923) 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, 395959464 + 395959465.

It is an arithmetic number, because the mean of its divisors is an integer number (395959465).

Almost surely, 2^791918929 is an apocalyptic number.

It is an amenable number.

791918929 is a deficient number, since it is larger than the sum of its proper divisors (1).

791918929 is an equidigital number, since it uses as much as digits as its factorization.

791918929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 734832, while the sum is 55.

The square root of 791918929 is about 28141.0541558059. The cubic root of 791918929 is about 925.1814317596.

The spelling of 791918929 in words is "seven hundred ninety-one million, nine hundred eighteen thousand, nine hundred twenty-nine".