442239273 has 48 divisors (see below), whose sum is σ = 759955456. Its totient is φ = 242494560.

The previous prime is 442239271. The next prime is 442239277. The reversal of 442239273 is 372932244.

It is a happy number.

It is not a de Polignac number, because 442239273 - 2¹ = 442239271 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442239271) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 247140 + ... + 248922.

Almost surely, 2^442239273 is an apocalyptic number.

It is an amenable number.

442239273 is a deficient number, since it is larger than the sum of its proper divisors (317716183).

442239273 is a wasteful number, since it uses less digits than its factorization.

442239273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1954 (or 1951 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 442239273 is about 21029.4857997051. The cubic root of 442239273 is about 761.8785895804.

The spelling of 442239273 in words is "four hundred forty-two million, two hundred thirty-nine thousand, two hundred seventy-three".