983438981 has 8 divisors (see below), whose sum is σ = 1162686720. Its totient is φ = 813880368.

The previous prime is 983438977. The next prime is 983438987. The reversal of 983438981 is 189834389.

983438981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 983438981 - 2² = 983438977 is a prime.

It is a super-2 number, since 2×983438981² = 1934304458700636722, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (983438987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2422061 + ... + 2422466.

It is an arithmetic number, because the mean of its divisors is an integer number (145335840).

Almost surely, 2^983438981 is an apocalyptic number.

It is an amenable number.

983438981 is a deficient number, since it is larger than the sum of its proper divisors (179247739).

983438981 is a wasteful number, since it uses less digits than its factorization.

983438981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4844563.

The product of its digits is 1492992, while the sum is 53.

The square root of 983438981 is about 31359.8306915072. The cubic root of 983438981 is about 994.4489026702.

The spelling of 983438981 in words is "nine hundred eighty-three million, four hundred thirty-eight thousand, nine hundred eighty-one".