1889089 has 4 divisors (see below), whose sum is σ = 1954260. Its totient is φ = 1823920.

The previous prime is 1889087. The next prime is 1889099. The reversal of 1889089 is 9809881.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9809881 = 1129 ⋅8689.

It can be written as a sum of positive squares in 2 ways, for example, as 1488400 + 400689 = 1220^2 + 633^2 .

It is a cyclic number.

It is not a de Polignac number, because 1889089 - 2¹ = 1889087 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1889081) 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, 32542 + ... + 32599.

It is an arithmetic number, because the mean of its divisors is an integer number (488565).

2^1889089 is an apocalyptic number.

It is an amenable number.

1889089 is a deficient number, since it is larger than the sum of its proper divisors (65171).

1889089 is an equidigital number, since it uses as much as digits as its factorization.

1889089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65170.

The product of its (nonzero) digits is 41472, while the sum is 43.

The square root of 1889089 is about 1374.4413410546. The cubic root of 1889089 is about 123.6186907704.

The spelling of 1889089 in words is "one million, eight hundred eighty-nine thousand, eighty-nine".