438454444 has 6 divisors (see below), whose sum is σ = 767295284. Its totient is φ = 219227220.

The previous prime is 438454409. The next prime is 438454459. The reversal of 438454444 is 444454834.

It is a junction number, because it is equal to n+sod(n) for n = 438454397 and 438454406.

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 as a sum of consecutive naturals, namely, 54806802 + ... + 54806809.

Almost surely, 2^438454444 is an apocalyptic number.

It is an amenable number.

438454444 is a deficient number, since it is larger than the sum of its proper divisors (328840840).

438454444 is a wasteful number, since it uses less digits than its factorization.

438454444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109613615 (or 109613613 counting only the distinct ones).

The product of its digits is 491520, while the sum is 40.

The square root of 438454444 is about 20939.3038088662. The cubic root of 438454444 is about 759.6988904124.

The spelling of 438454444 in words is "four hundred thirty-eight million, four hundred fifty-four thousand, four hundred forty-four".