19444474 has 12 divisors (see below), whose sum is σ = 33928794. Its totient is φ = 8333304.

The previous prime is 19444457. The next prime is 19444483. The reversal of 19444474 is 47444491.

It can be written as a sum of positive squares in only one way, i.e., 17581249 + 1863225 = 4193^2 + 1365^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 99109 + ... + 99304.

Almost surely, 2^19444474 is an apocalyptic number.

19444474 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19444474 is a deficient number, since it is larger than the sum of its proper divisors (14484320).

19444474 is a wasteful number, since it uses less digits than its factorization.

19444474 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198429 (or 198422 counting only the distinct ones).

The product of its digits is 64512, while the sum is 37.

The square root of 19444474 is about 4409.5888697247. The cubic root of 19444474 is about 268.9049105824.

The spelling of 19444474 in words is "nineteen million, four hundred forty-four thousand, four hundred seventy-four".