200444638 has 4 divisors (see below), whose sum is σ = 300666960. Its totient is φ = 100222318.

The previous prime is 200444633. The next prime is 200444639. The reversal of 200444638 is 836444002.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200444633) by changing a digit.

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 as a sum of consecutive naturals, namely, 50111158 + ... + 50111161.

It is an arithmetic number, because the mean of its divisors is an integer number (75166740).

Almost surely, 2^200444638 is an apocalyptic number.

200444638 is a deficient number, since it is larger than the sum of its proper divisors (100222322).

200444638 is a wasteful number, since it uses less digits than its factorization.

200444638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100222321.

The product of its (nonzero) digits is 18432, while the sum is 31.

The square root of 200444638 is about 14157.8472233599. The cubic root of 200444638 is about 585.2366033456.

The spelling of 200444638 in words is "two hundred million, four hundred forty-four thousand, six hundred thirty-eight".