433664440 has 32 divisors (see below), whose sum is σ = 1064450160. Its totient is φ = 157696000.

The previous prime is 433664423. The next prime is 433664443. The reversal of 433664440 is 44466334.

It is a junction number, because it is equal to n+sod(n) for n = 433664396 and 433664405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (433664443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 492361 + ... + 493240.

Almost surely, 2^433664440 is an apocalyptic number.

433664440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

433664440 is an abundant number, since it is smaller than the sum of its proper divisors (630785720).

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

433664440 is a wasteful number, since it uses less digits than its factorization.

433664440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985623 (or 985619 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 34.

The square root of 433664440 is about 20824.6114009362. The cubic root of 433664440 is about 756.9222482263.

The spelling of 433664440 in words is "four hundred thirty-three million, six hundred sixty-four thousand, four hundred forty".