404966669 has 2 divisors, whose sum is σ = 404966670. Its totient is φ = 404966668.

The previous prime is 404966659. The next prime is 404966699. The reversal of 404966669 is 966669404.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 305725225 + 99241444 = 17485^2 + 9962^2 .

It is a cyclic number.

It is not a de Polignac number, because 404966669 - 2¹² = 404962573 is a prime.

It is a super-2 number, since 2×404966669² = 327996006001911122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (404966659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202483334 + 202483335.

It is an arithmetic number, because the mean of its divisors is an integer number (202483335).

Almost surely, 2^404966669 is an apocalyptic number.

It is an amenable number.

404966669 is a deficient number, since it is larger than the sum of its proper divisors (1).

404966669 is an equidigital number, since it uses as much as digits as its factorization.

404966669 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1679616, while the sum is 50.

The square root of 404966669 is about 20123.7836651063. The cubic root of 404966669 is about 739.8433251214.

The spelling of 404966669 in words is "four hundred four million, nine hundred sixty-six thousand, six hundred sixty-nine".