19434444 has 24 divisors (see below), whose sum is σ = 45582768. Its totient is φ = 6444480.

The previous prime is 19434439. The next prime is 19434449. The reversal of 19434444 is 44443491.

It is an interprime number because it is at equal distance from previous prime (19434439) and next prime (19434449).

It is a super-2 number, since 2×19434444² = 755395227178272, which contains 22 as substring.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (19434449) 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 7 ways as a sum of consecutive naturals, for example, 1747 + ... + 6474.

It is an arithmetic number, because the mean of its divisors is an integer number (1899282).

Almost surely, 2^19434444 is an apocalyptic number.

It is an amenable number.

19434444 is an abundant number, since it is smaller than the sum of its proper divisors (26148324).

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

19434444 is a wasteful number, since it uses less digits than its factorization.

19434444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8425 (or 8423 counting only the distinct ones).

The product of its digits is 27648, while the sum is 33.

The square root of 19434444 is about 4408.4514287899. The cubic root of 19434444 is about 268.8586664218.

The spelling of 19434444 in words is "nineteen million, four hundred thirty-four thousand, four hundred forty-four".