799121191 has 8 divisors (see below), whose sum is σ = 880401168. Its totient is φ = 719280000.

The previous prime is 799121189. The next prime is 799121231. The reversal of 799121191 is 191121997.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a 7-Lehmer number, since φ(799121191) divides (799121191-1)⁷.

It is a cyclic number.

It is not a de Polignac number, because 799121191 - 2¹ = 799121189 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799121101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358530 + ... + 360751.

It is an arithmetic number, because the mean of its divisors is an integer number (110050146).

Almost surely, 2^799121191 is an apocalyptic number.

799121191 is a deficient number, since it is larger than the sum of its proper divisors (81279977).

799121191 is a wasteful number, since it uses less digits than its factorization.

799121191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719393.

The product of its digits is 10206, while the sum is 40.

The square root of 799121191 is about 28268.7316836111. The cubic root of 799121191 is about 927.9777196735.

The spelling of 799121191 in words is "seven hundred ninety-nine million, one hundred twenty-one thousand, one hundred ninety-one".