443989894 has 8 divisors (see below), whose sum is σ = 666324000. Its totient is φ = 221881896.

The previous prime is 443989873. The next prime is 443989919. The reversal of 443989894 is 498989344.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51529 + ... + 59524.

It is an arithmetic number, because the mean of its divisors is an integer number (83290500).

Almost surely, 2^443989894 is an apocalyptic number.

443989894 is a deficient number, since it is larger than the sum of its proper divisors (222334106).

443989894 is a wasteful number, since it uses less digits than its factorization.

443989894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113054.

The product of its digits is 8957952, while the sum is 58.

The square root of 443989894 is about 21071.0676995733. The cubic root of 443989894 is about 762.8825744410.

The spelling of 443989894 in words is "four hundred forty-three million, nine hundred eighty-nine thousand, eight hundred ninety-four".