2026389 has 4 divisors (see below), whose sum is σ = 2701856. Its totient is φ = 1350924.

The previous prime is 2026373. The next prime is 2026391. The reversal of 2026389 is 9836202.

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 not a de Polignac number, because 2026389 - 2⁴ = 2026373 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2026309) 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, 337729 + ... + 337734.

It is an arithmetic number, because the mean of its divisors is an integer number (675464).

2^2026389 is an apocalyptic number.

It is an amenable number.

2026389 is a deficient number, since it is larger than the sum of its proper divisors (675467).

2026389 is an equidigital number, since it uses as much as digits as its factorization.

2026389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 675466.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2026389 is about 1423.5129082660. The cubic root of 2026389 is about 126.5438198005.

It can be divided in two parts, 2026 and 389, that added together give a triangular number (2415 = T₆₉).

The spelling of 2026389 in words is "two million, twenty-six thousand, three hundred eighty-nine".