400612266 has 24 divisors (see below), whose sum is σ = 884372580. Its totient is φ = 131017536.

The previous prime is 400612181. The next prime is 400612291. The reversal of 400612266 is 662216004.

It is a happy number.

400612266 is a `hidden beast` number, since 40 + 0 + 612 + 2 + 6 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 308740041 + 91872225 = 17571^2 + 9585^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 209011 + ... + 210918.

Almost surely, 2^400612266 is an apocalyptic number.

400612266 is an abundant number, since it is smaller than the sum of its proper divisors (483760314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

400612266 is a wasteful number, since it uses less digits than its factorization.

400612266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419990 (or 419987 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 400612266 is about 20015.3007971402. The cubic root of 400612266 is about 737.1820426193.

The spelling of 400612266 in words is "four hundred million, six hundred twelve thousand, two hundred sixty-six".