291116793 has 16 divisors (see below), whose sum is σ = 424497600. Its totient is φ = 175994880.

The previous prime is 291116729. The next prime is 291116807. The reversal of 291116793 is 397611192.

It is a happy number.

It is not a de Polignac number, because 291116793 - 2⁶ = 291116729 is a prime.

It is not an unprimeable number, because it can be changed into a prime (291116713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2713 + ... + 24281.

It is an arithmetic number, because the mean of its divisors is an integer number (26531100).

Almost surely, 2^291116793 is an apocalyptic number.

It is an amenable number.

291116793 is a deficient number, since it is larger than the sum of its proper divisors (133380807).

291116793 is a wasteful number, since it uses less digits than its factorization.

291116793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21992.

The product of its digits is 20412, while the sum is 39.

The square root of 291116793 is about 17062.1450292746. The cubic root of 291116793 is about 662.7591812773.

The spelling of 291116793 in words is "two hundred ninety-one million, one hundred sixteen thousand, seven hundred ninety-three".