442453331 has 4 divisors (see below), whose sum is σ = 449952600. Its totient is φ = 434954064.

The previous prime is 442453321. The next prime is 442453343. The reversal of 442453331 is 133354244.

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

It is a cyclic number.

It is not a de Polignac number, because 442453331 - 2⁶ = 442453267 is a prime.

It is a super-2 number, since 2×442453331² = 391529900225991122, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 442453294 and 442453303.

It is not an unprimeable number, because it can be changed into a prime (442453301) 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, 3749546 + ... + 3749663.

It is an arithmetic number, because the mean of its divisors is an integer number (112488150).

Almost surely, 2^442453331 is an apocalyptic number.

442453331 is a deficient number, since it is larger than the sum of its proper divisors (7499269).

442453331 is an equidigital number, since it uses as much as digits as its factorization.

442453331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7499268.

The product of its digits is 17280, while the sum is 29.

The square root of 442453331 is about 21034.5746569784. The cubic root of 442453331 is about 762.0014943149.

The spelling of 442453331 in words is "four hundred forty-two million, four hundred fifty-three thousand, three hundred thirty-one".