1089744 has 40 divisors (see below), whose sum is σ = 2862912. Its totient is φ = 357120.

The previous prime is 1089713. The next prime is 1089757. The reversal of 1089744 is 4479801.

1089744 = T₁₃₅ + T₁₃₆ + ... + T₂₀₇.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3349 + ... + 3659.

2^1089744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1089744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1431456).

1089744 is an abundant number, since it is smaller than the sum of its proper divisors (1773168).

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

1089744 is a wasteful number, since it uses less digits than its factorization.

1089744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 395 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1089744 is about 1043.9080419271. The cubic root of 1089744 is about 102.9061891312.

The spelling of 1089744 in words is "one million, eighty-nine thousand, seven hundred forty-four".