20469443 has 4 divisors (see below), whose sum is σ = 20545248. Its totient is φ = 20393640.

The previous prime is 20469433. The next prime is 20469451. The reversal of 20469443 is 34496402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20469443 - 2¹⁰ = 20468419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20469413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37496 + ... + 38037.

It is an arithmetic number, because the mean of its divisors is an integer number (5136312).

Almost surely, 2^20469443 is an apocalyptic number.

20469443 is a deficient number, since it is larger than the sum of its proper divisors (75805).

20469443 is an equidigital number, since it uses as much as digits as its factorization.

20469443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75804.

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 20469443 is about 4524.3168545096. The cubic root of 20469443 is about 273.5491324089.

The spelling of 20469443 in words is "twenty million, four hundred sixty-nine thousand, four hundred forty-three".