11644993 has 2 divisors, whose sum is σ = 11644994. Its totient is φ = 11644992.

The previous prime is 11644991. The next prime is 11644999. The reversal of 11644993 is 39944611.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11641744 + 3249 = 3412^2 + 57^2 .

It is a cyclic number.

It is not a de Polignac number, because 11644993 - 2¹ = 11644991 is a prime.

Together with 11644991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (11644991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5822496 + 5822497.

It is an arithmetic number, because the mean of its divisors is an integer number (5822497).

Almost surely, 2^11644993 is an apocalyptic number.

It is an amenable number.

11644993 is a deficient number, since it is larger than the sum of its proper divisors (1).

11644993 is an equidigital number, since it uses as much as digits as its factorization.

11644993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 37.

The square root of 11644993 is about 3412.4760805023. The cubic root of 11644993 is about 226.6625362089.

The spelling of 11644993 in words is "eleven million, six hundred forty-four thousand, nine hundred ninety-three".