442847323 has 2 divisors, whose sum is σ = 442847324. Its totient is φ = 442847322.

The previous prime is 442847311. The next prime is 442847351. The reversal of 442847323 is 323748244.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-442847323 is a prime.

It is a super-2 number, since 2×442847323² = 392227502976532658, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (442847393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221423661 + 221423662.

It is an arithmetic number, because the mean of its divisors is an integer number (221423662).

Almost surely, 2^442847323 is an apocalyptic number.

442847323 is a deficient number, since it is larger than the sum of its proper divisors (1).

442847323 is an equidigital number, since it uses as much as digits as its factorization.

442847323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 129024, while the sum is 37.

The square root of 442847323 is about 21043.9379157039. The cubic root of 442847323 is about 762.2276073703.

The spelling of 442847323 in words is "four hundred forty-two million, eight hundred forty-seven thousand, three hundred twenty-three".