19440498 has 64 divisors (see below), whose sum is σ = 50181120. Its totient is φ = 4872000.

The previous prime is 19440493. The next prime is 19440511. The reversal of 19440498 is 89404491.

It is not an unprimeable number, because it can be changed into a prime (19440493) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12673 + ... + 14123.

It is an arithmetic number, because the mean of its divisors is an integer number (784080).

Almost surely, 2^19440498 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19440498, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25090560).

19440498 is an abundant number, since it is smaller than the sum of its proper divisors (30740622).

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

19440498 is a wasteful number, since it uses less digits than its factorization.

19440498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1503.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 19440498 is about 4409.1380109949. The cubic root of 19440498 is about 268.8865808022.

The spelling of 19440498 in words is "nineteen million, four hundred forty thousand, four hundred ninety-eight".