790991 has 2 divisors, whose sum is σ = 790992. Its totient is φ = 790990.

The previous prime is 790969. The next prime is 790997. The reversal of 790991 is 199097.

It is a happy number.

790991 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 790991 - 2⁶ = 790927 is a prime.

It is a super-3 number, since 3×790991³ = 1484690333415636813, which contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (790997) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395495 + 395496.

It is an arithmetic number, because the mean of its divisors is an integer number (395496).

2⁷⁹⁰⁹⁹¹ is an apocalyptic number.

790991 is a deficient number, since it is larger than the sum of its proper divisors (1).

790991 is an equidigital number, since it uses as much as digits as its factorization.

790991 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5103, while the sum is 35.

The square root of 790991 is about 889.3767480657. The cubic root of 790991 is about 92.4819930860.

It can be divided in two parts, 7909 and 91, that added together give a cube (8000 = 20³).

The spelling of 790991 in words is "seven hundred ninety thousand, nine hundred ninety-one".