11926289 has 4 divisors (see below), whose sum is σ = 12311040. Its totient is φ = 11541540.

The previous prime is 11926283. The next prime is 11926303. The reversal of 11926289 is 98262911.

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: 98262911 = 211 ⋅465701.

It is a cyclic number.

It is not a de Polignac number, because 11926289 - 2¹² = 11922193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11926283) 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, 192329 + ... + 192390.

It is an arithmetic number, because the mean of its divisors is an integer number (3077760).

Almost surely, 2^11926289 is an apocalyptic number.

It is an amenable number.

11926289 is a deficient number, since it is larger than the sum of its proper divisors (384751).

11926289 is an equidigital number, since it uses as much as digits as its factorization.

11926289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384750.

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

The square root of 11926289 is about 3453.4459601969. The cubic root of 11926289 is about 228.4731185668.

The spelling of 11926289 in words is "eleven million, nine hundred twenty-six thousand, two hundred eighty-nine".