403344666 has 12 divisors (see below), whose sum is σ = 873913482. Its totient is φ = 134448216.

The previous prime is 403344653. The next prime is 403344671. The reversal of 403344666 is 666443304.

It can be written as a sum of positive squares in only one way, i.e., 324756441 + 78588225 = 18021^2 + 8865^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 403344666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11204001 + ... + 11204036.

Almost surely, 2^403344666 is an apocalyptic number.

403344666 is an abundant number, since it is smaller than the sum of its proper divisors (470568816).

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

403344666 is a wasteful number, since it uses less digits than its factorization.

403344666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22408045 (or 22408042 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 36.

The square root of 403344666 is about 20083.4425833820. The cubic root of 403344666 is about 738.8542446966.

The spelling of 403344666 in words is "four hundred three million, three hundred forty-four thousand, six hundred sixty-six".