11729621 has 2 divisors, whose sum is σ = 11729622. Its totient is φ = 11729620.

The previous prime is 11729611. The next prime is 11729633. The reversal of 11729621 is 12692711.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8439025 + 3290596 = 2905^2 + 1814^2 .

It is a cyclic number.

It is not a de Polignac number, because 11729621 - 2¹⁴ = 11713237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11729611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5864810 + 5864811.

It is an arithmetic number, because the mean of its divisors is an integer number (5864811).

Almost surely, 2^11729621 is an apocalyptic number.

It is an amenable number.

11729621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11729621 is an equidigital number, since it uses as much as digits as its factorization.

11729621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 11729621 is about 3424.8534275207. The cubic root of 11729621 is about 227.2102885496.

The spelling of 11729621 in words is "eleven million, seven hundred twenty-nine thousand, six hundred twenty-one".