793981 has 2 divisors, whose sum is σ = 793982. Its totient is φ = 793980.

The previous prime is 793979. The next prime is 793999. The reversal of 793981 is 189397.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 793881 + 100 = 891^2 + 10^2 .

It is a cyclic number.

It is not a de Polignac number, because 793981 - 2¹ = 793979 is a prime.

It is a super-2 number, since 2×793981² = 1260811656722, which contains 22 as substring.

Together with 793979, it forms a pair of twin primes.

793981 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 793981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (793901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 396990 + 396991.

It is an arithmetic number, because the mean of its divisors is an integer number (396991).

2⁷⁹³⁹⁸¹ is an apocalyptic number.

It is an amenable number.

793981 is a deficient number, since it is larger than the sum of its proper divisors (1).

793981 is an equidigital number, since it uses as much as digits as its factorization.

793981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608, while the sum is 37.

The square root of 793981 is about 891.0561149557. The cubic root of 793981 is about 92.5983759805.

The spelling of 793981 in words is "seven hundred ninety-three thousand, nine hundred eighty-one".