442275438 has 16 divisors (see below), whose sum is σ = 964964736. Its totient is φ = 134022840.

The previous prime is 442275413. The next prime is 442275439. The reversal of 442275438 is 834572244.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 442275396 and 442275405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442275439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3350506 + ... + 3350637.

It is an arithmetic number, because the mean of its divisors is an integer number (60310296).

Almost surely, 2^442275438 is an apocalyptic number.

442275438 is an abundant number, since it is smaller than the sum of its proper divisors (522689298).

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

442275438 is a wasteful number, since it uses less digits than its factorization.

442275438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6701159.

The product of its digits is 215040, while the sum is 39.

The square root of 442275438 is about 21030.3456462323. The cubic root of 442275438 is about 761.8993570622.

The spelling of 442275438 in words is "four hundred forty-two million, two hundred seventy-five thousand, four hundred thirty-eight".