1098089 has 4 divisors (see below), whose sum is σ = 1145856. Its totient is φ = 1050324.

The previous prime is 1098077. The next prime is 1098101. The reversal of 1098089 is 9808901.

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, and also an emirpimes, since its reverse is a distinct semiprime: 9808901 = 1873 ⋅5237.

It is an interprime number because it is at equal distance from previous prime (1098077) and next prime (1098101).

It is a cyclic number.

It is not a de Polignac number, because 1098089 - 2⁴ = 1098073 is a prime.

It is a Duffinian number.

It is a plaindrome in base 7.

It is not an unprimeable number, because it can be changed into a prime (1098689) 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, 23849 + ... + 23894.

It is an arithmetic number, because the mean of its divisors is an integer number (286464).

2^1098089 is an apocalyptic number.

It is an amenable number.

1098089 is a deficient number, since it is larger than the sum of its proper divisors (47767).

1098089 is an equidigital number, since it uses as much as digits as its factorization.

1098089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47766.

The product of its (nonzero) digits is 5184, while the sum is 35.

The square root of 1098089 is about 1047.8974186436. The cubic root of 1098089 is about 103.1681984920.

The spelling of 1098089 in words is "one million, ninety-eight thousand, eighty-nine".