1089647 has 8 divisors (see below), whose sum is σ = 1189440. Its totient is φ = 992160.

The previous prime is 1089629. The next prime is 1089653. The reversal of 1089647 is 7469801.

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

It is not a de Polignac number, because 1089647 - 2¹⁰ = 1088623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a zygodrome in base 12.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 497 + ... + 1557.

It is an arithmetic number, because the mean of its divisors is an integer number (148680).

2^1089647 is an apocalyptic number.

1089647 is a deficient number, since it is larger than the sum of its proper divisors (99793).

1089647 is a wasteful number, since it uses less digits than its factorization.

1089647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 1089647 is about 1043.8615808621. The cubic root of 1089647 is about 102.9031357546.

The spelling of 1089647 in words is "one million, eighty-nine thousand, six hundred forty-seven".