2019993 has 8 divisors (see below), whose sum is σ = 2712000. Its totient is φ = 1337328.

The previous prime is 2019977. The next prime is 2020001. The reversal of 2019993 is 3999102.

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

It is not a de Polignac number, because 2019993 - 2⁴ = 2019977 is a prime.

2019993 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2019973) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1813 + ... + 2706.

It is an arithmetic number, because the mean of its divisors is an integer number (339000).

2^2019993 is an apocalyptic number.

It is an amenable number.

2019993 is a deficient number, since it is larger than the sum of its proper divisors (692007).

2019993 is a wasteful number, since it uses less digits than its factorization.

2019993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4671.

The product of its (nonzero) digits is 4374, while the sum is 33.

The square root of 2019993 is about 1421.2645777616. The cubic root of 2019993 is about 126.4105404672.

The spelling of 2019993 in words is "two million, nineteen thousand, nine hundred ninety-three".