1089547 has 4 divisors (see below), whose sum is σ = 1153656. Its totient is φ = 1025440.

The previous prime is 1089523. The next prime is 1089551. The reversal of 1089547 is 7459801.

It is a happy number.

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

It is not a de Polignac number, because 1089547 - 2¹⁵ = 1056779 is a prime.

It is a super-2 number, since 2×1089547² = 2374225330418, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089047) 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, 32029 + ... + 32062.

It is an arithmetic number, because the mean of its divisors is an integer number (288414).

2^1089547 is an apocalyptic number.

1089547 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

1089547 is a deficient number, since it is larger than the sum of its proper divisors (64109).

1089547 is an equidigital number, since it uses as much as digits as its factorization.

1089547 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64108.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1089547 is about 1043.8136806921. The cubic root of 1089547 is about 102.8999877539.

The spelling of 1089547 in words is "one million, eighty-nine thousand, five hundred forty-seven".