1089577 has 4 divisors (see below), whose sum is σ = 1114960. Its totient is φ = 1064196.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089577 is 7759801.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7759801 = 7 ⋅1108543.

It is a cyclic number.

It is not a de Polignac number, because 1089577 - 2¹⁹ = 565289 is a prime.

It is a Duffinian number.

1089577 is a lucky 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 3 ways as a sum of consecutive naturals, for example, 12627 + ... + 12712.

It is an arithmetic number, because the mean of its divisors is an integer number (278740).

2^1089577 is an apocalyptic number.

It is an amenable number.

1089577 is a deficient number, since it is larger than the sum of its proper divisors (25383).

1089577 is an equidigital number, since it uses as much as digits as its factorization.

1089577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25382.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 1089577 is about 1043.8280509739. The cubic root of 1089577 is about 102.9009321743.

The spelling of 1089577 in words is "one million, eighty-nine thousand, five hundred seventy-seven".