1089544 has 8 divisors (see below), whose sum is σ = 2042910. Its totient is φ = 544768.

The previous prime is 1089523. The next prime is 1089551. The reversal of 1089544 is 4459801.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1077444 + 12100 = 1038^2 + 110^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×1089544² = 2374212255872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 68089 + ... + 68104.

2^1089544 is an apocalyptic number.

It is an amenable number.

1089544 is a deficient number, since it is larger than the sum of its proper divisors (953366).

1089544 is a wasteful number, since it uses less digits than its factorization.

1089544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136199 (or 136195 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 1089544 is about 1043.8122436530. The cubic root of 1089544 is about 102.8998933109.

It can be divided in two parts, 1089 and 544, that multiplied together give a triangular number (592416 = T₁₀₈₈).

The spelling of 1089544 in words is "one million, eighty-nine thousand, five hundred forty-four".