981944438 has 4 divisors (see below), whose sum is σ = 1472916660. Its totient is φ = 490972218.

The previous prime is 981944407. The next prime is 981944449. The reversal of 981944438 is 834449189.

981944438 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 245486108 + ... + 245486111.

It is an arithmetic number, because the mean of its divisors is an integer number (368229165).

Almost surely, 2^981944438 is an apocalyptic number.

981944438 is a deficient number, since it is larger than the sum of its proper divisors (490972222).

981944438 is a wasteful number, since it uses less digits than its factorization.

981944438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490972221.

The product of its digits is 995328, while the sum is 50.

The square root of 981944438 is about 31335.9926921105. The cubic root of 981944438 is about 993.9448889660.

The spelling of 981944438 in words is "nine hundred eighty-one million, nine hundred forty-four thousand, four hundred thirty-eight".