442052489 has 4 divisors (see below), whose sum is σ = 450393156. Its totient is φ = 433711824.

The previous prime is 442052483. The next prime is 442052503. The reversal of 442052489 is 984250244.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 179774464 + 262278025 = 13408^2 + 16195^2 .

It is a cyclic number.

It is not a de Polignac number, because 442052489 - 2⁴ = 442052473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442052483) 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, 4170254 + ... + 4170359.

It is an arithmetic number, because the mean of its divisors is an integer number (112598289).

Almost surely, 2^442052489 is an apocalyptic number.

It is an amenable number.

442052489 is a deficient number, since it is larger than the sum of its proper divisors (8340667).

442052489 is an equidigital number, since it uses as much as digits as its factorization.

442052489 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8340666.

The product of its (nonzero) digits is 92160, while the sum is 38.

The square root of 442052489 is about 21025.0443281340. The cubic root of 442052489 is about 761.7713122318.

The spelling of 442052489 in words is "four hundred forty-two million, fifty-two thousand, four hundred eighty-nine".