1123289 has 8 divisors (see below), whose sum is σ = 1163712. Its totient is φ = 1083600.

The previous prime is 1123279. The next prime is 1123303. The reversal of 1123289 is 9823211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1123289 - 2¹⁶ = 1057753 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1123219) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6407 + ... + 6579.

It is an arithmetic number, because the mean of its divisors is an integer number (145464).

2^1123289 is an apocalyptic number.

It is an amenable number.

1123289 is a deficient number, since it is larger than the sum of its proper divisors (40423).

1123289 is a wasteful number, since it uses less digits than its factorization.

1123289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 367.

The product of its digits is 864, while the sum is 26.

The square root of 1123289 is about 1059.8532917343. The cubic root of 1123289 is about 103.9514381268.

The spelling of 1123289 in words is "one million, one hundred twenty-three thousand, two hundred eighty-nine".