11208961 has 4 divisors (see below), whose sum is σ = 11250900. Its totient is φ = 11167024.

The previous prime is 11208959. The next prime is 11208973. The reversal of 11208961 is 16980211.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16980211 = 2677 ⋅6343.

It can be written as a sum of positive squares in 2 ways, for example, as 1166400 + 10042561 = 1080^2 + 3169^2 .

It is a cyclic number.

It is not a de Polignac number, because 11208961 - 2¹ = 11208959 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11208941) 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, 20566 + ... + 21103.

It is an arithmetic number, because the mean of its divisors is an integer number (2812725).

Almost surely, 2^11208961 is an apocalyptic number.

It is an amenable number.

11208961 is a deficient number, since it is larger than the sum of its proper divisors (41939).

11208961 is an equidigital number, since it uses as much as digits as its factorization.

11208961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41938.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 11208961 is about 3347.9786438984. The cubic root of 11208961 is about 223.7974425787.

The spelling of 11208961 in words is "eleven million, two hundred eight thousand, nine hundred sixty-one".