869329823 has 2 divisors, whose sum is σ = 869329824. Its totient is φ = 869329822.

The previous prime is 869329793. The next prime is 869329829. The reversal of 869329823 is 328923968.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 869329823 - 2¹² = 869325727 is a prime.

It is a super-2 number, since 2×869329823² = 1511468682314422658, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (869329829) 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, 434664911 + 434664912.

It is an arithmetic number, because the mean of its divisors is an integer number (434664912).

Almost surely, 2^869329823 is an apocalyptic number.

869329823 is a deficient number, since it is larger than the sum of its proper divisors (1).

869329823 is an equidigital number, since it uses as much as digits as its factorization.

869329823 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1119744, while the sum is 50.

The square root of 869329823 is about 29484.3996547327. The cubic root of 869329823 is about 954.3950823150.

The spelling of 869329823 in words is "eight hundred sixty-nine million, three hundred twenty-nine thousand, eight hundred twenty-three".