11653889 has 4 divisors (see below), whose sum is σ = 12550356. Its totient is φ = 10757424.

The previous prime is 11653883. The next prime is 11653909. The reversal of 11653889 is 98835611.

11653889 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 an emirpimes, since its reverse is a distinct semiprime: 98835611 = 7 ⋅14119373.

It can be written as a sum of positive squares in 2 ways, for example, as 2755600 + 8898289 = 1660^2 + 2983^2 .

It is a cyclic number.

It is not a de Polignac number, because 11653889 - 2⁸ = 11653633 is a prime.

It is a super-4 number, since 4×11653889⁴ (a number of 29 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (11653883) 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, 448214 + ... + 448239.

It is an arithmetic number, because the mean of its divisors is an integer number (3137589).

Almost surely, 2^11653889 is an apocalyptic number.

It is an amenable number.

11653889 is a deficient number, since it is larger than the sum of its proper divisors (896467).

11653889 is an equidigital number, since it uses as much as digits as its factorization.

11653889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 896466.

The product of its digits is 51840, while the sum is 41.

The square root of 11653889 is about 3413.7792840194. The cubic root of 11653889 is about 226.7202398839.

The spelling of 11653889 in words is "eleven million, six hundred fifty-three thousand, eight hundred eighty-nine".