982191440 has 20 divisors (see below), whose sum is σ = 2283595284. Its totient is φ = 392876544.

The previous prime is 982191407. The next prime is 982191443. The reversal of 982191440 is 44191289.

It can be written as a sum of positive squares in 2 ways, for example, as 139334416 + 842857024 = 11804^2 + 29032^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 982191394 and 982191403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (982191443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6138617 + ... + 6138776.

Almost surely, 2^982191440 is an apocalyptic number.

It is an amenable number.

982191440 is an abundant number, since it is smaller than the sum of its proper divisors (1301403844).

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

982191440 is a wasteful number, since it uses less digits than its factorization.

982191440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12277406 (or 12277400 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 38.

The square root of 982191440 is about 31339.9336310720. The cubic root of 982191440 is about 994.0282221919.

The spelling of 982191440 in words is "nine hundred eighty-two million, one hundred ninety-one thousand, four hundred forty".