19994494 has 8 divisors (see below), whose sum is σ = 32298840. Its totient is φ = 9228216.

The previous prime is 19994489. The next prime is 19994503. The reversal of 19994494 is 49449991.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384484 + ... + 384535.

It is an arithmetic number, because the mean of its divisors is an integer number (4037355).

Almost surely, 2^19994494 is an apocalyptic number.

19994494 is a deficient number, since it is larger than the sum of its proper divisors (12304346).

19994494 is a wasteful number, since it uses less digits than its factorization.

19994494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769034.

The product of its digits is 419904, while the sum is 49.

The square root of 19994494 is about 4471.5203231116. The cubic root of 19994494 is about 271.4168500676.

The spelling of 19994494 in words is "nineteen million, nine hundred ninety-four thousand, four hundred ninety-four".