442093237 has 4 divisors (see below), whose sum is σ = 442303020. Its totient is φ = 441883456.

The previous prime is 442093231. The next prime is 442093247. The reversal of 442093237 is 732390244.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197514916 + 244578321 = 14054^2 + 15639^2 .

It is a cyclic number.

It is not a de Polignac number, because 442093237 - 2³ = 442093229 is a prime.

It is a super-2 number, since 2×442093237² = 390892860402276338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442093231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101698 + ... + 105955.

It is an arithmetic number, because the mean of its divisors is an integer number (110575755).

Almost surely, 2^442093237 is an apocalyptic number.

It is an amenable number.

442093237 is a deficient number, since it is larger than the sum of its proper divisors (209783).

442093237 is a wasteful number, since it uses less digits than its factorization.

442093237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209782.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 442093237 is about 21026.0133406217. The cubic root of 442093237 is about 761.7947179769.

The spelling of 442093237 in words is "four hundred forty-two million, ninety-three thousand, two hundred thirty-seven".