2027989 has 4 divisors (see below), whose sum is σ = 2093440. Its totient is φ = 1962540.

The previous prime is 2027959. The next prime is 2028017. The reversal of 2027989 is 9897202.

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 2027989 - 2¹⁵ = 1995221 is a prime.

It is a super-2 number, since 2×2027989² = 8225478768242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2027959) 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, 32679 + ... + 32740.

It is an arithmetic number, because the mean of its divisors is an integer number (523360).

2^2027989 is an apocalyptic number.

It is an amenable number.

2027989 is a deficient number, since it is larger than the sum of its proper divisors (65451).

2027989 is an equidigital number, since it uses as much as digits as its factorization.

2027989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65450.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 2027989 is about 1424.0747873620. The cubic root of 2027989 is about 126.5771166068.

The spelling of 2027989 in words is "two million, twenty-seven thousand, nine hundred eighty-nine".