1124289689 has 4 divisors (see below), whose sum is σ = 1145502756. Its totient is φ = 1103076624.

The previous prime is 1124289667. The next prime is 1124289707. The reversal of 1124289689 is 9869824211.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 736199689 + 388090000 = 27133^2 + 19700^2 .

It is a cyclic number.

It is not a de Polignac number, because 1124289689 - 2⁸ = 1124289433 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1124289629) 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, 10606454 + ... + 10606559.

It is an arithmetic number, because the mean of its divisors is an integer number (286375689).

Almost surely, 2^1124289689 is an apocalyptic number.

It is an amenable number.

1124289689 is a deficient number, since it is larger than the sum of its proper divisors (21213067).

1124289689 is an equidigital number, since it uses as much as digits as its factorization.

1124289689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21213066.

The product of its digits is 497664, while the sum is 50.

The square root of 1124289689 is about 33530.4292993693. The cubic root of 1124289689 is about 1039.8229756016.

The spelling of 1124289689 in words is "one billion, one hundred twenty-four million, two hundred eighty-nine thousand, six hundred eighty-nine".