1993893 has 32 divisors (see below), whose sum is σ = 3151872. Its totient is φ = 1108800.

The previous prime is 1993877. The next prime is 1993921. The reversal of 1993893 is 3983991.

It is a happy number.

It is not a de Polignac number, because 1993893 - 2⁴ = 1993877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1993193) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28048 + ... + 28118.

It is an arithmetic number, because the mean of its divisors is an integer number (98496).

2^1993893 is an apocalyptic number.

It is an amenable number.

1993893 is a deficient number, since it is larger than the sum of its proper divisors (1157979).

1993893 is a wasteful number, since it uses less digits than its factorization.

1993893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145.

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

The square root of 1993893 is about 1412.0527610539. The cubic root of 1993893 is about 125.8637352775.

The spelling of 1993893 in words is "one million, nine hundred ninety-three thousand, eight hundred ninety-three".