443140469 has 2 divisors, whose sum is σ = 443140470. Its totient is φ = 443140468.

The previous prime is 443140459. The next prime is 443140501. The reversal of 443140469 is 964041344.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386319025 + 56821444 = 19655^2 + 7538^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-443140469 is a prime.

It is a super-2 number, since 2×443140469² = 392746950531079922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (443140459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221570234 + 221570235.

It is an arithmetic number, because the mean of its divisors is an integer number (221570235).

Almost surely, 2^443140469 is an apocalyptic number.

It is an amenable number.

443140469 is a deficient number, since it is larger than the sum of its proper divisors (1).

443140469 is an equidigital number, since it uses as much as digits as its factorization.

443140469 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 443140469 is about 21050.9018571652. The cubic root of 443140469 is about 762.3957576388.

The spelling of 443140469 in words is "four hundred forty-three million, one hundred forty thousand, four hundred sixty-nine".