442484487 has 12 divisors (see below), whose sum is σ = 639328144. Its totient is φ = 294904800.

The previous prime is 442484437. The next prime is 442484503. The reversal of 442484487 is 784484244.

It is a de Polignac number, because none of the positive numbers 2^k-442484487 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442484417) 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 11 ways as a sum of consecutive naturals, for example, 51363 + ... + 59355.

Almost surely, 2^442484487 is an apocalyptic number.

442484487 is a deficient number, since it is larger than the sum of its proper divisors (196843657).

442484487 is a wasteful number, since it uses less digits than its factorization.

442484487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14150 (or 14147 counting only the distinct ones).

The product of its digits is 917504, while the sum is 45.

The square root of 442484487 is about 21035.3152341485. The cubic root of 442484487 is about 762.0193797125.

The spelling of 442484487 in words is "four hundred forty-two million, four hundred eighty-four thousand, four hundred eighty-seven".