817933 has 2 divisors, whose sum is σ = 817934. Its totient is φ = 817932.

The previous prime is 817919. The next prime is 817951. The reversal of 817933 is 339718.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 412164 + 405769 = 642^2 + 637^2 .

It is a cyclic number.

It is not a de Polignac number, because 817933 - 2¹³ = 809741 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 817895 and 817904.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (817913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 408966 + 408967.

It is an arithmetic number, because the mean of its divisors is an integer number (408967).

2⁸¹⁷⁹³³ is an apocalyptic number.

It is an amenable number.

817933 is a deficient number, since it is larger than the sum of its proper divisors (1).

817933 is an equidigital number, since it uses as much as digits as its factorization.

817933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4536, while the sum is 31.

The square root of 817933 is about 904.3964838499. The cubic root of 817933 is about 93.5203040542.

It can be divided in two parts, 81793 and 3, that added together give a square (81796 = 286²).

The spelling of 817933 in words is "eight hundred seventeen thousand, nine hundred thirty-three".