442093238 has 4 divisors (see below), whose sum is σ = 663139860. Its totient is φ = 221046618.

The previous prime is 442093231. The next prime is 442093247. The reversal of 442093238 is 832390244.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 442093198 and 442093207.

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 as a sum of consecutive naturals, namely, 110523308 + ... + 110523311.

It is an arithmetic number, because the mean of its divisors is an integer number (165784965).

Almost surely, 2^442093238 is an apocalyptic number.

442093238 is a deficient number, since it is larger than the sum of its proper divisors (221046622).

442093238 is a wasteful number, since it uses less digits than its factorization.

442093238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221046621.

The product of its (nonzero) digits is 41472, while the sum is 35.

The square root of 442093238 is about 21026.0133644017. The cubic root of 442093238 is about 761.7947185513.

The spelling of 442093238 in words is "four hundred forty-two million, ninety-three thousand, two hundred thirty-eight".