1440440198 has 8 divisors (see below), whose sum is σ = 2274379320. Its totient is φ = 682313760.

The previous prime is 1440440191. The next prime is 1440440213. The reversal of 1440440198 is 8910440441.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1440440191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18953123 + ... + 18953198.

It is an arithmetic number, because the mean of its divisors is an integer number (284297415).

Almost surely, 2^1440440198 is an apocalyptic number.

1440440198 is a deficient number, since it is larger than the sum of its proper divisors (833939122).

1440440198 is a wasteful number, since it uses less digits than its factorization.

1440440198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37906342.

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 1440440198 is about 37953.1315967471. The cubic root of 1440440198 is about 1129.3582902058.

The spelling of 1440440198 in words is "one billion, four hundred forty million, four hundred forty thousand, one hundred ninety-eight".