20444113 has 2 divisors, whose sum is σ = 20444114. Its totient is φ = 20444112.

The previous prime is 20444111. The next prime is 20444147. The reversal of 20444113 is 31144402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17581249 + 2862864 = 4193^2 + 1692^2 .

It is a cyclic number.

It is not a de Polignac number, because 20444113 - 2¹ = 20444111 is a prime.

Together with 20444111, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (20444111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10222056 + 10222057.

It is an arithmetic number, because the mean of its divisors is an integer number (10222057).

Almost surely, 2^20444113 is an apocalyptic number.

It is an amenable number.

20444113 is a deficient number, since it is larger than the sum of its proper divisors (1).

20444113 is an equidigital number, since it uses as much as digits as its factorization.

20444113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 20444113 is about 4521.5166703220. The cubic root of 20444113 is about 273.4362509853.

Adding to 20444113 its reverse (31144402), we get a palindrome (51588515).

The spelling of 20444113 in words is "twenty million, four hundred forty-four thousand, one hundred thirteen".