442648087 has 16 divisors (see below), whose sum is σ = 530288640. Its totient is φ = 361259712.

The previous prime is 442648079. The next prime is 442648097. The reversal of 442648087 is 780846244.

It is not a de Polignac number, because 442648087 - 2³ = 442648079 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442648027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29739 + ... + 42067.

It is an arithmetic number, because the mean of its divisors is an integer number (33143040).

Almost surely, 2^442648087 is an apocalyptic number.

442648087 is a deficient number, since it is larger than the sum of its proper divisors (87640553).

442648087 is a wasteful number, since it uses less digits than its factorization.

442648087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12582.

The product of its (nonzero) digits is 344064, while the sum is 43.

The square root of 442648087 is about 21039.2035733295. The cubic root of 442648087 is about 762.1132820700.

The spelling of 442648087 in words is "four hundred forty-two million, six hundred forty-eight thousand, eighty-seven".