1993389 has 8 divisors (see below), whose sum is σ = 2665152. Its totient is φ = 1325280.

The previous prime is 1993367. The next prime is 1993417. The reversal of 1993389 is 9833991.

It is a happy number.

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

It is not a de Polignac number, because 1993389 - 2⁵ = 1993357 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1993389.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993319) 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 7 ways as a sum of consecutive naturals, for example, 849 + ... + 2169.

It is an arithmetic number, because the mean of its divisors is an integer number (333144).

2^1993389 is an apocalyptic number.

It is an amenable number.

1993389 is a deficient number, since it is larger than the sum of its proper divisors (671763).

1993389 is a wasteful number, since it uses less digits than its factorization.

1993389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1827.

The product of its digits is 52488, while the sum is 42.

The square root of 1993389 is about 1411.8742861884. The cubic root of 1993389 is about 125.8531294479.

The spelling of 1993389 in words is "one million, nine hundred ninety-three thousand, three hundred eighty-nine".