442223515 has 16 divisors (see below), whose sum is σ = 536372928. Its totient is φ = 349997056.

The previous prime is 442223513. The next prime is 442223521. The reversal of 442223515 is 515322244.

It is a cyclic number.

It is not a de Polignac number, because 442223515 - 2¹ = 442223513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442223513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193419 + ... + 195691.

It is an arithmetic number, because the mean of its divisors is an integer number (33523308).

Almost surely, 2^442223515 is an apocalyptic number.

442223515 is a deficient number, since it is larger than the sum of its proper divisors (94149413).

442223515 is a wasteful number, since it uses less digits than its factorization.

442223515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2678.

The product of its digits is 9600, while the sum is 28.

The square root of 442223515 is about 21029.1111319523. Note that the first 4 decimals coincide. The cubic root of 442223515 is about 761.8695403122.

Adding to 442223515 its reverse (515322244), we get a palindrome (957545759).

The spelling of 442223515 in words is "four hundred forty-two million, two hundred twenty-three thousand, five hundred fifteen".