790127991 has 6 divisors (see below), whose sum is σ = 1141296000. Its totient is φ = 526751988.

The previous prime is 790127981. The next prime is 790127999. The reversal of 790127991 is 199721097.

It is not a de Polignac number, because 790127991 - 2⁵ = 790127959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (790127999) 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 in 5 ways as a sum of consecutive naturals, for example, 43895991 + ... + 43896008.

It is an arithmetic number, because the mean of its divisors is an integer number (190216000).

Almost surely, 2^790127991 is an apocalyptic number.

790127991 is a deficient number, since it is larger than the sum of its proper divisors (351168009).

790127991 is a wasteful number, since it uses less digits than its factorization.

790127991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87792005 (or 87792002 counting only the distinct ones).

The product of its (nonzero) digits is 71442, while the sum is 45.

The square root of 790127991 is about 28109.2154106087. The cubic root of 790127991 is about 924.4834675439.

The spelling of 790127991 in words is "seven hundred ninety million, one hundred twenty-seven thousand, nine hundred ninety-one".