879493 has 2 divisors, whose sum is σ = 879494. Its totient is φ = 879492.

The previous prime is 879457. The next prime is 879523. The reversal of 879493 is 394978.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 859329 + 20164 = 927^2 + 142^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879493 is a prime.

879493 is a lucky number.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (879413) 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, 439746 + 439747.

It is an arithmetic number, because the mean of its divisors is an integer number (439747).

2⁸⁷⁹⁴⁹³ is an apocalyptic number.

It is an amenable number.

879493 is a deficient number, since it is larger than the sum of its proper divisors (1).

879493 is an equidigital number, since it uses as much as digits as its factorization.

879493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 54432, while the sum is 40.

The square root of 879493 is about 937.8128811229. The cubic root of 879493 is about 95.8099901977.

The spelling of 879493 in words is "eight hundred seventy-nine thousand, four hundred ninety-three".