11935621 has 2 divisors, whose sum is σ = 11935622. Its totient is φ = 11935620.

The previous prime is 11935607. The next prime is 11935663. The reversal of 11935621 is 12653911.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11826721 + 108900 = 3439^2 + 330^2 .

It is a cyclic number.

It is not a de Polignac number, because 11935621 - 2¹⁷ = 11804549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11935621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11935601) 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 as a sum of consecutive naturals, namely, 5967810 + 5967811.

It is an arithmetic number, because the mean of its divisors is an integer number (5967811).

Almost surely, 2^11935621 is an apocalyptic number.

It is an amenable number.

11935621 is a deficient number, since it is larger than the sum of its proper divisors (1).

11935621 is an equidigital number, since it uses as much as digits as its factorization.

11935621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 11935621 is about 3454.7968102336. The cubic root of 11935621 is about 228.5326943851.

The spelling of 11935621 in words is "eleven million, nine hundred thirty-five thousand, six hundred twenty-one".