11609489 has 4 divisors (see below), whose sum is σ = 11806320. Its totient is φ = 11412660.

The previous prime is 11609473. The next prime is 11609497. The reversal of 11609489 is 98490611.

It is a happy number.

11609489 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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: 98490611 = 107 ⋅920473.

It is a cyclic number.

It is not a de Polignac number, because 11609489 - 2⁴ = 11609473 is a prime.

It is a super-2 number, since 2×11609489² = 269560469682242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11609449) 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, 98327 + ... + 98444.

It is an arithmetic number, because the mean of its divisors is an integer number (2951580).

Almost surely, 2^11609489 is an apocalyptic number.

It is an amenable number.

11609489 is a deficient number, since it is larger than the sum of its proper divisors (196831).

11609489 is an equidigital number, since it uses as much as digits as its factorization.

11609489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196830.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 11609489 is about 3407.2700215862. The cubic root of 11609489 is about 226.4319472891.

The spelling of 11609489 in words is "eleven million, six hundred nine thousand, four hundred eighty-nine".