11939091 has 8 divisors (see below), whose sum is σ = 15945984. Its totient is φ = 7945800.

The previous prime is 11939089. The next prime is 11939099. The reversal of 11939091 is 19093911.

11939091 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11939091 - 2¹ = 11939089 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (11939099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1135 + ... + 5016.

It is an arithmetic number, because the mean of its divisors is an integer number (1993248).

Almost surely, 2^11939091 is an apocalyptic number.

11939091 is a deficient number, since it is larger than the sum of its proper divisors (4006893).

11939091 is an equidigital number, since it uses as much as digits as its factorization.

11939091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6801.

The product of its (nonzero) digits is 2187, while the sum is 33.

The square root of 11939091 is about 3455.2989740397. The cubic root of 11939091 is about 228.5548390676.

The spelling of 11939091 in words is "eleven million, nine hundred thirty-nine thousand, ninety-one".