1141689 has 4 divisors (see below), whose sum is σ = 1522256. Its totient is φ = 761124.

The previous prime is 1141667. The next prime is 1141717. The reversal of 1141689 is 9861411.

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 1141689 - 2¹⁷ = 1010617 is a prime.

It is a D-number.

It is a Duffinian number.

1141689 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1141649) 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, 190279 + ... + 190284.

It is an arithmetic number, because the mean of its divisors is an integer number (380564).

2^1141689 is an apocalyptic number.

It is an amenable number.

1141689 is a deficient number, since it is larger than the sum of its proper divisors (380567).

1141689 is an equidigital number, since it uses as much as digits as its factorization.

1141689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380566.

The product of its digits is 1728, while the sum is 30.

The square root of 1141689 is about 1068.4984791753. The cubic root of 1141689 is about 104.5159579729.

It can be divided in two parts, 1141 and 689, that added together give a triangular number (1830 = T₆₀).

The spelling of 1141689 in words is "one million, one hundred forty-one thousand, six hundred eighty-nine".