19938793 has 4 divisors (see below), whose sum is σ = 22787200. Its totient is φ = 17090388.

The previous prime is 19938791. The next prime is 19938803. The reversal of 19938793 is 39783991.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 19938793 - 2¹ = 19938791 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19938791) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1424193 + ... + 1424206.

It is an arithmetic number, because the mean of its divisors is an integer number (5696800).

Almost surely, 2^19938793 is an apocalyptic number.

It is an amenable number.

19938793 is a deficient number, since it is larger than the sum of its proper divisors (2848407).

19938793 is an equidigital number, since it uses as much as digits as its factorization.

19938793 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848406.

The product of its digits is 367416, while the sum is 49.

The square root of 19938793 is about 4465.2875607289. The cubic root of 19938793 is about 271.1645764405.

The spelling of 19938793 in words is "nineteen million, nine hundred thirty-eight thousand, seven hundred ninety-three".