11389091 has 4 divisors (see below), whose sum is σ = 13016112. Its totient is φ = 9762072.

The previous prime is 11389073. The next prime is 11389093. The reversal of 11389091 is 19098311.

11389091 is digitally balanced in base 2, 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: 19098311 = 233 ⋅81967.

It is a cyclic number.

It is not a de Polignac number, because 11389091 - 2¹⁴ = 11372707 is a prime.

It is a super-2 number, since 2×11389091² = 259422787612562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11389093) 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, 813500 + ... + 813513.

It is an arithmetic number, because the mean of its divisors is an integer number (3254028).

Almost surely, 2^11389091 is an apocalyptic number.

11389091 is a deficient number, since it is larger than the sum of its proper divisors (1627021).

11389091 is an equidigital number, since it uses as much as digits as its factorization.

11389091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627020.

The product of its (nonzero) digits is 1944, while the sum is 32.

The square root of 11389091 is about 3374.7727330889. The cubic root of 11389091 is about 224.9898991350.

The spelling of 11389091 in words is "eleven million, three hundred eighty-nine thousand, ninety-one".