1089597 has 4 divisors (see below), whose sum is σ = 1452800. Its totient is φ = 726396.

The previous prime is 1089563. The next prime is 1089611. The reversal of 1089597 is 7959801.

It is a happy number.

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.

It is not a de Polignac number, because 1089597 - 2⁷ = 1089469 is a prime.

It is a D-number.

It is a Duffinian number.

1089597 is a lucky number.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1089197) 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, 181597 + ... + 181602.

It is an arithmetic number, because the mean of its divisors is an integer number (363200).

2^1089597 is an apocalyptic number.

It is an amenable number.

1089597 is a deficient number, since it is larger than the sum of its proper divisors (363203).

1089597 is an equidigital number, since it uses as much as digits as its factorization.

1089597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363202.

The product of its (nonzero) digits is 22680, while the sum is 39.

The square root of 1089597 is about 1043.8376310519. The cubic root of 1089597 is about 102.9015617783.

The spelling of 1089597 in words is "one million, eighty-nine thousand, five hundred ninety-seven".