11891095 has 4 divisors (see below), whose sum is σ = 14269320. Its totient is φ = 9512872.

The previous prime is 11891083. The next prime is 11891111. The reversal of 11891095 is 59019811.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 11891095 - 2¹³ = 11882903 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11891095.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1189105 + ... + 1189114.

It is an arithmetic number, because the mean of its divisors is an integer number (3567330).

Almost surely, 2^11891095 is an apocalyptic number.

11891095 is a deficient number, since it is larger than the sum of its proper divisors (2378225).

11891095 is an equidigital number, since it uses as much as digits as its factorization.

11891095 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2378224.

The product of its (nonzero) digits is 3240, while the sum is 34.

The square root of 11891095 is about 3448.3467053068. The cubic root of 11891095 is about 228.2481588058.

The spelling of 11891095 in words is "eleven million, eight hundred ninety-one thousand, ninety-five".