442750869 has 24 divisors (see below), whose sum is σ = 701973792. Its totient is φ = 266677920.

The previous prime is 442750831. The next prime is 442750877. The reversal of 442750869 is 968057244.

It is a happy number.

It is not a de Polignac number, because 442750869 - 2⁷ = 442750741 is a prime.

It is a super-2 number, since 2×442750869² = 392056664000510322, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442750969) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2419 + ... + 29855.

It is an arithmetic number, because the mean of its divisors is an integer number (29248908).

Almost surely, 2^442750869 is an apocalyptic number.

It is an amenable number.

442750869 is a deficient number, since it is larger than the sum of its proper divisors (259222923).

442750869 is a wasteful number, since it uses less digits than its factorization.

442750869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27617 (or 27614 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The square root of 442750869 is about 21041.6460620361. The cubic root of 442750869 is about 762.1722645647.

The spelling of 442750869 in words is "four hundred forty-two million, seven hundred fifty thousand, eight hundred sixty-nine".