201443969 has 4 divisors (see below), whose sum is σ = 204281280. Its totient is φ = 198606660.

The previous prime is 201443953. The next prime is 201443981. The reversal of 201443969 is 969344102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201443969 - 2⁴ = 201443953 is a prime.

It is a super-2 number, since 2×201443969² = 81159345292945922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (201443939) 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, 1418549 + ... + 1418690.

It is an arithmetic number, because the mean of its divisors is an integer number (51070320).

Almost surely, 2^201443969 is an apocalyptic number.

It is an amenable number.

201443969 is a deficient number, since it is larger than the sum of its proper divisors (2837311).

201443969 is an equidigital number, since it uses as much as digits as its factorization.

201443969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2837310.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 201443969 is about 14193.0958215606. The cubic root of 201443969 is about 586.2075710902.

The spelling of 201443969 in words is "two hundred one million, four hundred forty-three thousand, nine hundred sixty-nine".