20344369 has 2 divisors, whose sum is σ = 20344370. Its totient is φ = 20344368.

The previous prime is 20344343. The next prime is 20344403. The reversal of 20344369 is 96344302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18601969 + 1742400 = 4313^2 + 1320^2 .

It is a cyclic number.

It is not a de Polignac number, because 20344369 - 2¹⁵ = 20311601 is a prime.

It is a super-2 number, since 2×20344369² = 827786700016322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20344369.

It is not a weakly prime, because it can be changed into another prime (20344309) 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, 10172184 + 10172185.

It is an arithmetic number, because the mean of its divisors is an integer number (10172185).

Almost surely, 2^20344369 is an apocalyptic number.

It is an amenable number.

20344369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20344369 is an equidigital number, since it uses as much as digits as its factorization.

20344369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 20344369 is about 4510.4732567659. The cubic root of 20344369 is about 272.9908399472.

The spelling of 20344369 in words is "twenty million, three hundred forty-four thousand, three hundred sixty-nine".