11890117 has 4 divisors (see below), whose sum is σ = 11959020. Its totient is φ = 11821216.

The previous prime is 11890091. The next prime is 11890127. The reversal of 11890117 is 71109811.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71109811 = 73 ⋅974107.

It can be written as a sum of positive squares in 2 ways, for example, as 9326916 + 2563201 = 3054^2 + 1601^2 .

It is a cyclic number.

It is not a de Polignac number, because 11890117 - 2⁷ = 11889989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11890127) 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, 34192 + ... + 34537.

It is an arithmetic number, because the mean of its divisors is an integer number (2989755).

Almost surely, 2^11890117 is an apocalyptic number.

It is an amenable number.

11890117 is a deficient number, since it is larger than the sum of its proper divisors (68903).

11890117 is an equidigital number, since it uses as much as digits as its factorization.

11890117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68902.

The product of its (nonzero) digits is 504, while the sum is 28.

The square root of 11890117 is about 3448.2048953042. The cubic root of 11890117 is about 228.2419011029.

Adding to 11890117 its reverse (71109811), we get a palindrome (82999928).

The spelling of 11890117 in words is "eleven million, eight hundred ninety thousand, one hundred seventeen".