20043469 has 2 divisors, whose sum is σ = 20043470. Its totient is φ = 20043468.

The previous prime is 20043467. The next prime is 20043559. The reversal of 20043469 is 96434002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 1077444 = 4355^2 + 1038^2 .

It is a cyclic number.

It is not a de Polignac number, because 20043469 - 2¹ = 20043467 is a prime.

It is a super-2 number, since 2×20043469² = 803481299107922, which contains 22 as substring.

Together with 20043467, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20043467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021734 + 10021735.

It is an arithmetic number, because the mean of its divisors is an integer number (10021735).

Almost surely, 2^20043469 is an apocalyptic number.

It is an amenable number.

20043469 is a deficient number, since it is larger than the sum of its proper divisors (1).

20043469 is an equidigital number, since it uses as much as digits as its factorization.

20043469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 20043469 is about 4476.9932990792. The cubic root of 20043469 is about 271.6382743903.

The spelling of 20043469 in words is "twenty million, forty-three thousand, four hundred sixty-nine".