789731993 has 2 divisors, whose sum is σ = 789731994. Its totient is φ = 789731992.

The previous prime is 789731981. The next prime is 789732043. The reversal of 789731993 is 399137987.

789731993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 627602704 + 162129289 = 25052^2 + 12733^2 .

It is an emirp because it is prime and its reverse (399137987) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 789731993 - 2²² = 785537689 is a prime.

It is not a weakly prime, because it can be changed into another prime (789731693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394865996 + 394865997.

It is an arithmetic number, because the mean of its divisors is an integer number (394865997).

Almost surely, 2^789731993 is an apocalyptic number.

It is an amenable number.

789731993 is a deficient number, since it is larger than the sum of its proper divisors (1).

789731993 is an equidigital number, since it uses as much as digits as its factorization.

789731993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2571912, while the sum is 56.

The square root of 789731993 is about 28102.1706101148. The cubic root of 789731993 is about 924.3289968821.

The spelling of 789731993 in words is "seven hundred eighty-nine million, seven hundred thirty-one thousand, nine hundred ninety-three".