442068329 has 2 divisors, whose sum is σ = 442068330. Its totient is φ = 442068328.

The previous prime is 442068313. The next prime is 442068343. The reversal of 442068329 is 923860244.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 437437225 + 4631104 = 20915^2 + 2152^2 .

It is a cyclic number.

It is not a de Polignac number, because 442068329 - 2⁴ = 442068313 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 442068292 and 442068301.

It is not a weakly prime, because it can be changed into another prime (442068359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221034164 + 221034165.

It is an arithmetic number, because the mean of its divisors is an integer number (221034165).

Almost surely, 2^442068329 is an apocalyptic number.

It is an amenable number.

442068329 is a deficient number, since it is larger than the sum of its proper divisors (1).

442068329 is an equidigital number, since it uses as much as digits as its factorization.

442068329 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 442068329 is about 21025.4210183768. The cubic root of 442068329 is about 761.7804109352.

The spelling of 442068329 in words is "four hundred forty-two million, sixty-eight thousand, three hundred twenty-nine".