442353238 has 4 divisors (see below), whose sum is σ = 663529860. Its totient is φ = 221176618.

The previous prime is 442353187. The next prime is 442353239. The reversal of 442353238 is 832353244.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442353239) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110588308 + ... + 110588311.

It is an arithmetic number, because the mean of its divisors is an integer number (165882465).

Almost surely, 2^442353238 is an apocalyptic number.

442353238 is a deficient number, since it is larger than the sum of its proper divisors (221176622).

442353238 is a wasteful number, since it uses less digits than its factorization.

442353238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221176621.

The product of its digits is 69120, while the sum is 34.

The square root of 442353238 is about 21032.1952729619. The cubic root of 442353238 is about 761.9440292955.

The spelling of 442353238 in words is "four hundred forty-two million, three hundred fifty-three thousand, two hundred thirty-eight".