442679329 has 2 divisors, whose sum is σ = 442679330. Its totient is φ = 442679328.

The previous prime is 442679327. The next prime is 442679333. The reversal of 442679329 is 923976244.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 226442304 + 216237025 = 15048^2 + 14705^2 .

It is a cyclic number.

It is not a de Polignac number, because 442679329 - 2¹ = 442679327 is a prime.

Together with 442679327, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (442679327) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221339664 + 221339665.

It is an arithmetic number, because the mean of its divisors is an integer number (221339665).

Almost surely, 2^442679329 is an apocalyptic number.

It is an amenable number.

442679329 is a deficient number, since it is larger than the sum of its proper divisors (1).

442679329 is an equidigital number, since it uses as much as digits as its factorization.

442679329 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 46.

The square root of 442679329 is about 21039.9460312996. The cubic root of 442679329 is about 762.1312115748.

The spelling of 442679329 in words is "four hundred forty-two million, six hundred seventy-nine thousand, three hundred twenty-nine".