442777716 has 36 divisors (see below), whose sum is σ = 1185083172. Its totient is φ = 138910464.

The previous prime is 442777697. The next prime is 442777717. The reversal of 442777716 is 617777244.

It can be written as a sum of positive squares in 2 ways, for example, as 394419600 + 48358116 = 19860^2 + 6954^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442777717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 361135 + ... + 362358.

It is an arithmetic number, because the mean of its divisors is an integer number (32918977).

Almost surely, 2^442777716 is an apocalyptic number.

It is an amenable number.

442777716 is an abundant number, since it is smaller than the sum of its proper divisors (742305456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

442777716 is a wasteful number, since it uses less digits than its factorization.

442777716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723520 (or 723515 counting only the distinct ones).

The product of its digits is 460992, while the sum is 45.

The square root of 442777716 is about 21042.2840015052. The cubic root of 442777716 is about 762.1876694847.

The spelling of 442777716 in words is "four hundred forty-two million, seven hundred seventy-seven thousand, seven hundred sixteen".