2019389 has 4 divisors (see below), whose sum is σ = 2022240. Its totient is φ = 2016540.

The previous prime is 2019361. The next prime is 2019401. The reversal of 2019389 is 9839102.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 2019389 - 2⁸ = 2019133 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2019089) 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, 554 + ... + 2084.

It is an arithmetic number, because the mean of its divisors is an integer number (505560).

2^2019389 is an apocalyptic number.

It is an amenable number.

2019389 is a deficient number, since it is larger than the sum of its proper divisors (2851).

2019389 is a wasteful number, since it uses less digits than its factorization.

2019389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2850.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 2019389 is about 1421.0520750486. The cubic root of 2019389 is about 126.3979398332.

The spelling of 2019389 in words is "two million, nineteen thousand, three hundred eighty-nine".