1089671 has 16 divisors (see below), whose sum is σ = 1278720. Its totient is φ = 918720.

The previous prime is 1089661. The next prime is 1089677. The reversal of 1089671 is 1769801.

1089671 = T₁₀ + T₁₁ + ... + T₁₈₆.

It is a de Polignac number, because none of the positive numbers 2^k-1089671 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 (1089677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14891 + ... + 14963.

It is an arithmetic number, because the mean of its divisors is an integer number (79920).

2^1089671 is an apocalyptic number.

1089671 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1089671 is a deficient number, since it is larger than the sum of its proper divisors (189049).

1089671 is a wasteful number, since it uses less digits than its factorization.

1089671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166.

The product of its (nonzero) digits is 3024, while the sum is 32.

The square root of 1089671 is about 1043.8730765759. The cubic root of 1089671 is about 102.9038912460.

It can be divided in two parts, 108 and 9671, that added together give a palindrome (9779).

The spelling of 1089671 in words is "one million, eighty-nine thousand, six hundred seventy-one".