19940444 has 12 divisors (see below), whose sum is σ = 35036568. Its totient is φ = 9930000.

The previous prime is 19940423. The next prime is 19940449. The reversal of 19940444 is 44404991.

It is a hoax number, since the sum of its digits (35) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940449) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8927 + ... + 10934.

It is an arithmetic number, because the mean of its divisors is an integer number (2919714).

Almost surely, 2^19940444 is an apocalyptic number.

It is an amenable number.

19940444 is a deficient number, since it is larger than the sum of its proper divisors (15096124).

19940444 is a wasteful number, since it uses less digits than its factorization.

19940444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20116 (or 20114 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 19940444 is about 4465.4724274146. The cubic root of 19940444 is about 271.1720606843.

The spelling of 19940444 in words is "nineteen million, nine hundred forty thousand, four hundred forty-four".