1122989 has 8 divisors (see below), whose sum is σ = 1293888. Its totient is φ = 954720.

The previous prime is 1122983. The next prime is 1122997. The reversal of 1122989 is 9892211.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1122989 - 2¹² = 1118893 is a prime.

It is a super-2 number, since 2×1122989² = 2522208588242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1122983) 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, 374 + ... + 1544.

It is an arithmetic number, because the mean of its divisors is an integer number (161736).

2^1122989 is an apocalyptic number.

It is an amenable number.

1122989 is a deficient number, since it is larger than the sum of its proper divisors (170899).

1122989 is a wasteful number, since it uses less digits than its factorization.

1122989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1315.

The product of its digits is 2592, while the sum is 32.

The square root of 1122989 is about 1059.7117532612. The cubic root of 1122989 is about 103.9421831004.

The spelling of 1122989 in words is "one million, one hundred twenty-two thousand, nine hundred eighty-nine".