11729961 has 16 divisors (see below), whose sum is σ = 17475520. Its totient is φ = 7776000.

The previous prime is 11729947. The next prime is 11729989. The reversal of 11729961 is 16992711.

It is not a de Polignac number, because 11729961 - 2¹¹ = 11727913 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11729911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4086 + ... + 6336.

It is an arithmetic number, because the mean of its divisors is an integer number (1092220).

Almost surely, 2^11729961 is an apocalyptic number.

It is an amenable number.

11729961 is a deficient number, since it is larger than the sum of its proper divisors (5745559).

11729961 is a wasteful number, since it uses less digits than its factorization.

11729961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2447 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 11729961 is about 3424.9030643217. The cubic root of 11729961 is about 227.2124838678.

The spelling of 11729961 in words is "eleven million, seven hundred twenty-nine thousand, nine hundred sixty-one".