879699823 has 2 divisors, whose sum is σ = 879699824. Its totient is φ = 879699822.

The previous prime is 879699817. The next prime is 879699841. The reversal of 879699823 is 328996978.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879699823 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (879697823) 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, 439849911 + 439849912.

It is an arithmetic number, because the mean of its divisors is an integer number (439849912).

Almost surely, 2^879699823 is an apocalyptic number.

879699823 is a deficient number, since it is larger than the sum of its proper divisors (1).

879699823 is an equidigital number, since it uses as much as digits as its factorization.

879699823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 11757312, while the sum is 61.

The square root of 879699823 is about 29659.7340345459. The cubic root of 879699823 is about 958.1749988666.

The spelling of 879699823 in words is "eight hundred seventy-nine million, six hundred ninety-nine thousand, eight hundred twenty-three".