11539091 has 4 divisors (see below), whose sum is σ = 11590152. Its totient is φ = 11488032.

The previous prime is 11539069. The next prime is 11539127. The reversal of 11539091 is 19093511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19093511 = 977 ⋅19543.

It is a cyclic number.

It is not a de Polignac number, because 11539091 - 2⁶ = 11539027 is a prime.

It is a super-2 number, since 2×11539091² = 266301242212562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11539051) 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, 25190 + ... + 25643.

It is an arithmetic number, because the mean of its divisors is an integer number (2897538).

Almost surely, 2^11539091 is an apocalyptic number.

11539091 is a deficient number, since it is larger than the sum of its proper divisors (51061).

11539091 is an equidigital number, since it uses as much as digits as its factorization.

11539091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51060.

The product of its (nonzero) digits is 1215, while the sum is 29.

The square root of 11539091 is about 3396.9237553999. The cubic root of 11539091 is about 225.9733372362.

The spelling of 11539091 in words is "eleven million, five hundred thirty-nine thousand, ninety-one".