2189393 has 4 divisors (see below), whose sum is σ = 2284608. Its totient is φ = 2094180.

The previous prime is 2189381. The next prime is 2189399. The reversal of 2189393 is 3939812.

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 a cyclic number.

It is not a de Polignac number, because 2189393 - 2⁶ = 2189329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2189399) 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, 47573 + ... + 47618.

It is an arithmetic number, because the mean of its divisors is an integer number (571152).

2^2189393 is an apocalyptic number.

2189393 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

2189393 is a deficient number, since it is larger than the sum of its proper divisors (95215).

2189393 is an equidigital number, since it uses as much as digits as its factorization.

2189393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95214.

The product of its digits is 11664, while the sum is 35.

The square root of 2189393 is about 1479.6597581877. The cubic root of 2189393 is about 129.8497870504.

The spelling of 2189393 in words is "two million, one hundred eighty-nine thousand, three hundred ninety-three".