791401693 has 2 divisors, whose sum is σ = 791401694. Its totient is φ = 791401692.

The previous prime is 791401673. The next prime is 791401703. The reversal of 791401693 is 396104197.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 764080164 + 27321529 = 27642^2 + 5227^2 .

It is an emirp because it is prime and its reverse (396104197) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 791401693 - 2¹³ = 791393501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (791401613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395700846 + 395700847.

It is an arithmetic number, because the mean of its divisors is an integer number (395700847).

Almost surely, 2^791401693 is an apocalyptic number.

It is an amenable number.

791401693 is a deficient number, since it is larger than the sum of its proper divisors (1).

791401693 is an equidigital number, since it uses as much as digits as its factorization.

791401693 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 40824, while the sum is 40.

The square root of 791401693 is about 28131.8625938632. The cubic root of 791401693 is about 924.9799627508.

The spelling of 791401693 in words is "seven hundred ninety-one million, four hundred one thousand, six hundred ninety-three".