1089867 has 8 divisors (see below), whose sum is σ = 1500160. Its totient is φ = 703080.

The previous prime is 1089863. The next prime is 1089877. The reversal of 1089867 is 7689801.

1089867 is nontrivially palindromic in base 5.

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

It is not a de Polignac number, because 1089867 - 2² = 1089863 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089863) 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, 5767 + ... + 5952.

It is an arithmetic number, because the mean of its divisors is an integer number (187520).

2^1089867 is an apocalyptic number.

1089867 is a deficient number, since it is larger than the sum of its proper divisors (410293).

1089867 is a wasteful number, since it uses less digits than its factorization.

1089867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11753.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 1089867 is about 1043.9669535000. The cubic root of 1089867 is about 102.9100606781.

The spelling of 1089867 in words is "one million, eighty-nine thousand, eight hundred sixty-seven".