1089408 has 32 divisors (see below), whose sum is σ = 2894760. Its totient is φ = 363008.

The previous prime is 1089401. The next prime is 1089421. The reversal of 1089408 is 8049801.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089401) 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, 1035 + ... + 1802.

2^1089408 is an apocalyptic number.

It is an amenable number.

1089408 is an abundant number, since it is smaller than the sum of its proper divisors (1805352).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1089408 is an equidigital number, since it uses as much as digits as its factorization.

1089408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2854 (or 2842 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1089408 is about 1043.7470958043. The cubic root of 1089408 is about 102.8956117130.

It can be divided in two parts, 108 and 9408, that multiplied together give a square (1016064 = 1008²).

The spelling of 1089408 in words is "one million, eighty-nine thousand, four hundred eight".