791119961 has 4 divisors (see below), whose sum is σ = 792510900. Its totient is φ = 789729024.

The previous prime is 791119921. The next prime is 791119963. The reversal of 791119961 is 169911197.

791119961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 42823936 + 748296025 = 6544^2 + 27355^2 .

It is a cyclic number.

It is not a de Polignac number, because 791119961 - 2¹⁸ = 790857817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (791119963) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 694616 + ... + 695753.

It is an arithmetic number, because the mean of its divisors is an integer number (198127725).

Almost surely, 2^791119961 is an apocalyptic number.

It is an amenable number.

791119961 is a deficient number, since it is larger than the sum of its proper divisors (1390939).

791119961 is a wasteful number, since it uses less digits than its factorization.

791119961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1390938.

The product of its digits is 30618, while the sum is 44.

The square root of 791119961 is about 28126.8548010616. The cubic root of 791119961 is about 924.8701881628.

It can be divided in two parts, 7911 and 19961, that added together give a palindrome (27872).

The spelling of 791119961 in words is "seven hundred ninety-one million, one hundred nineteen thousand, nine hundred sixty-one".