1140089 has 4 divisors (see below), whose sum is σ = 1143156. Its totient is φ = 1137024.

The previous prime is 1139993. The next prime is 1140091. The reversal of 1140089 is 9800411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9800411 = 157 ⋅62423.

It can be written as a sum of positive squares in 2 ways, for example, as 156025 + 984064 = 395^2 + 992^2 .

It is a cyclic number.

It is not a de Polignac number, because 1140089 - 2²⁰ = 91513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1140289) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 884 + ... + 1749.

It is an arithmetic number, because the mean of its divisors is an integer number (285789).

2^1140089 is an apocalyptic number.

It is an amenable number.

1140089 is a deficient number, since it is larger than the sum of its proper divisors (3067).

1140089 is an equidigital number, since it uses as much as digits as its factorization.

1140089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3066.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 1140089 is about 1067.7495024583. The cubic root of 1140089 is about 104.4671111293.

It can be divided in two parts, 11400 and 89, that multiplied together give a triangular number (1014600 = T₁₄₂₄).

The spelling of 1140089 in words is "one million, one hundred forty thousand, eighty-nine".