442345744 has 10 divisors (see below), whose sum is σ = 857044910. Its totient is φ = 221172864.

The previous prime is 442345663. The next prime is 442345751. The reversal of 442345744 is 447543244.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 440496144 + 1849600 = 20988^2 + 1360^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 13823289 + ... + 13823320.

It is an arithmetic number, because the mean of its divisors is an integer number (85704491).

Almost surely, 2^442345744 is an apocalyptic number.

It is an amenable number.

442345744 is a deficient number, since it is larger than the sum of its proper divisors (414699166).

442345744 is a wasteful number, since it uses less digits than its factorization.

442345744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27646617 (or 27646611 counting only the distinct ones).

The product of its digits is 215040, while the sum is 37.

The square root of 442345744 is about 21032.0171167675. The cubic root of 442345744 is about 761.9397265194.

Adding to 442345744 its reverse (447543244), we get a palindrome (889888988).

The spelling of 442345744 in words is "four hundred forty-two million, three hundred forty-five thousand, seven hundred forty-four".