404210069 has 2 divisors, whose sum is σ = 404210070. Its totient is φ = 404210068.

The previous prime is 404210017. The next prime is 404210137. The reversal of 404210069 is 960012404.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 403487569 + 722500 = 20087^2 + 850^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-404210069 is a prime.

It is a super-2 number, since 2×404210069² = 326771559761969522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404210869) 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, 202105034 + 202105035.

It is an arithmetic number, because the mean of its divisors is an integer number (202105035).

Almost surely, 2^404210069 is an apocalyptic number.

It is an amenable number.

404210069 is a deficient number, since it is larger than the sum of its proper divisors (1).

404210069 is an equidigital number, since it uses as much as digits as its factorization.

404210069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 404210069 is about 20104.9762248056. The cubic root of 404210069 is about 739.3822876513.

The spelling of 404210069 in words is "four hundred four million, two hundred ten thousand, sixty-nine".