381969444 has 24 divisors (see below), whose sum is σ = 893200000. Its totient is φ = 127046304.

The previous prime is 381969439. The next prime is 381969499. The reversal of 381969444 is 444969183.

It is a happy number.

It is a super-2 number, since 2×381969444² = 291801312299338272, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 381969393 and 381969402.

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 7 ways as a sum of consecutive naturals, for example, 28819 + ... + 39930.

Almost surely, 2^381969444 is an apocalyptic number.

It is an amenable number.

381969444 is an abundant number, since it is smaller than the sum of its proper divisors (511230556).

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

381969444 is a wasteful number, since it uses less digits than its factorization.

381969444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69219 (or 69217 counting only the distinct ones).

The product of its digits is 746496, while the sum is 48.

The square root of 381969444 is about 19544.0385795771. The cubic root of 381969444 is about 725.5648037971.

The spelling of 381969444 in words is "three hundred eighty-one million, nine hundred sixty-nine thousand, four hundred forty-four".