11889761 has 4 divisors (see below), whose sum is σ = 12804372. Its totient is φ = 10975152.

The previous prime is 11889751. The next prime is 11889791. The reversal of 11889761 is 16798811.

11889761 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 16798811 = 3023 ⋅5557.

It can be written as a sum of positive squares in 2 ways, for example, as 5290000 + 6599761 = 2300^2 + 2569^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11889761 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (11889701) 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, 457286 + ... + 457311.

It is an arithmetic number, because the mean of its divisors is an integer number (3201093).

Almost surely, 2^11889761 is an apocalyptic number.

It is an amenable number.

11889761 is a deficient number, since it is larger than the sum of its proper divisors (914611).

11889761 is an equidigital number, since it uses as much as digits as its factorization.

11889761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 914610.

The product of its digits is 24192, while the sum is 41.

The square root of 11889761 is about 3448.1532738554. The cubic root of 11889761 is about 228.2396231627.

The spelling of 11889761 in words is "eleven million, eight hundred eighty-nine thousand, seven hundred sixty-one".