19994283 has 14 divisors (see below), whose sum is σ = 29978804. Its totient is φ = 13329036.

The previous prime is 19994281. The next prime is 19994297. The reversal of 19994283 is 38249991.

It is not a de Polignac number, because 19994283 - 2¹ = 19994281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19994281) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 12985 + ... + 14442.

Almost surely, 2^19994283 is an apocalyptic number.

19994283 is a deficient number, since it is larger than the sum of its proper divisors (9984521).

19994283 is an frugal number, since it uses more digits than its factorization.

19994283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27445 (or 27430 counting only the distinct ones).

The product of its digits is 139968, while the sum is 45.

The square root of 19994283 is about 4471.4967292843. The cubic root of 19994283 is about 271.4158953188.

The spelling of 19994283 in words is "nineteen million, nine hundred ninety-four thousand, two hundred eighty-three".