404808829 has 2 divisors, whose sum is σ = 404808830. Its totient is φ = 404808828.

The previous prime is 404808821. The next prime is 404808857. The reversal of 404808829 is 928808404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 283147929 + 121660900 = 16827^2 + 11030^2 .

It is a cyclic number.

It is not a de Polignac number, because 404808829 - 2³ = 404808821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404808821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202404414 + 202404415.

It is an arithmetic number, because the mean of its divisors is an integer number (202404415).

Almost surely, 2^404808829 is an apocalyptic number.

It is an amenable number.

404808829 is a deficient number, since it is larger than the sum of its proper divisors (1).

404808829 is an equidigital number, since it uses as much as digits as its factorization.

404808829 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 404808829 is about 20119.8615551897. The cubic root of 404808829 is about 739.7471920695.

The spelling of 404808829 in words is "four hundred four million, eight hundred eight thousand, eight hundred twenty-nine".