400466669 has 2 divisors, whose sum is σ = 400466670. Its totient is φ = 400466668.

The previous prime is 400466641. The next prime is 400466683. The reversal of 400466669 is 966664004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340218025 + 60248644 = 18445^2 + 7762^2 .

It is a cyclic number.

It is not a de Polignac number, because 400466669 - 2²⁰ = 399418093 is a prime.

It is a super-2 number, since 2×400466669² = 320747105959911122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400466609) 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, 200233334 + 200233335.

It is an arithmetic number, because the mean of its divisors is an integer number (200233335).

Almost surely, 2^400466669 is an apocalyptic number.

It is an amenable number.

400466669 is a deficient number, since it is larger than the sum of its proper divisors (1).

400466669 is an equidigital number, since it uses as much as digits as its factorization.

400466669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 186624, while the sum is 41.

The square root of 400466669 is about 20011.6633241717. The cubic root of 400466669 is about 737.0927255845.

The spelling of 400466669 in words is "four hundred million, four hundred sixty-six thousand, six hundred sixty-nine".