20003369 has 2 divisors, whose sum is σ = 20003370. Its totient is φ = 20003368.

The previous prime is 20003317. The next prime is 20003383. The reversal of 20003369 is 96330002.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16810000 + 3193369 = 4100^2 + 1787^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20003369 is a prime.

It is a super-2 number, since 2×20003369² = 800269542700322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (20003869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10001684 + 10001685.

It is an arithmetic number, because the mean of its divisors is an integer number (10001685).

Almost surely, 2^20003369 is an apocalyptic number.

It is an amenable number.

20003369 is a deficient number, since it is larger than the sum of its proper divisors (1).

20003369 is an equidigital number, since it uses as much as digits as its factorization.

20003369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 20003369 is about 4472.5126047894. The cubic root of 20003369 is about 271.4570022587.

The spelling of 20003369 in words is "twenty million, three thousand, three hundred sixty-nine".