1089447 has 4 divisors (see below), whose sum is σ = 1452600. Its totient is φ = 726296.

The previous prime is 1089427. The next prime is 1089457. The reversal of 1089447 is 7449801.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1089447 - 2⁶ = 1089383 is a prime.

It is a D-number.

1089447 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089427) 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, 181572 + ... + 181577.

It is an arithmetic number, because the mean of its divisors is an integer number (363150).

2^1089447 is an apocalyptic number.

1089447 is a deficient number, since it is larger than the sum of its proper divisors (363153).

1089447 is an equidigital number, since it uses as much as digits as its factorization.

1089447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363152.

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

The square root of 1089447 is about 1043.7657783239. The cubic root of 1089447 is about 102.8968395606.

The spelling of 1089447 in words is "one million, eighty-nine thousand, four hundred forty-seven".